diff --git a/src/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md b/src/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
index c7006be42..806855b6f 100644
--- a/src/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
+++ b/src/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
@@ -1532,10 +1532,10 @@ The `iotdb-system.properties` file contains various configurations for managing
 - slow_query_threshold
 
 | Name        | slow_query_threshold                   |
-| ----------- | -------------------------------------- |
+| ----------- |----------------------------------------|
 | Description | Time cost(ms) threshold for slow query |
 | Type        | long                                   |
-| Default     | 10000                                  |
+| Default     | 3000                                   |
 | Effective   | Hot reload                             |
 
 - query_cost_stat_window
diff --git a/src/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md b/src/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
index d32adb558..d2b565de2 100644
--- a/src/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
+++ b/src/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
@@ -1533,10 +1533,10 @@ The `iotdb-system.properties` file contains various configurations for managing
 - slow_query_threshold
 
 | Name        | slow_query_threshold                   |
-| ----------- | -------------------------------------- |
+| ----------- |----------------------------------------|
 | Description | Time cost(ms) threshold for slow query |
 | Type        | long                                   |
-| Default     | 10000                                  |
+| Default     | 3000                                   |
 | Effective   | Hot reload                             |
 
 - query_cost_stat_window
diff --git a/src/UserGuide/Master/Table/Reference/System-Tables_apache.md b/src/UserGuide/Master/Table/Reference/System-Tables_apache.md
index 2aa05d9fd..412ec50b2 100644
--- a/src/UserGuide/Master/Table/Reference/System-Tables_apache.md
+++ b/src/UserGuide/Master/Table/Reference/System-Tables_apache.md
@@ -23,6 +23,10 @@
 
 IoTDB has a built-in system database called `INFORMATION_SCHEMA`, which contains a series of system tables for storing IoTDB runtime information (such as currently executing SQL statements, etc.). Currently, the `INFORMATION_SCHEMA` database only supports read operations.
 
+> 💡 **[V2.0.8-beta Version Update]**<br>
+> 👉 Added four system tables: **[CONNECTIONS](#_2-18-connections)** (real-time connection tracking), **[CURRENT_QUERIES](#_2-19-current-queries)** (active query monitoring), **[QUERIES_COSTS_HISTOGRAM](#_2-20-queries-costs-histogram)** (query latency distribution), **[SERVICES](#_2-21-services)** (service status management), enhancing cluster maintenance and performance analysis.
+
+
 ## 1. System Database
 
 * ​**Name**​: `INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. System Tables
 
-* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES` , `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM` (detailed descriptions in later sections)
+* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES` , `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`, `SERVICES` (detailed descriptions in later sections)
 * ​**Operations**​: Read-only, only supports `SELECT`, `COUNT/SHOW DEVICES`, `DESC`. Any modifications to table structure or content are not allowed and will result in an error: `"The database 'information_schema' can only be queried."  `
 * ​**Column Names**​: System table column names are all lowercase by default and separated by underscores (`_`).
 
@@ -343,7 +348,7 @@ IoTDB> select * from information_schema.topics
 +----------+----------------------------------------------------------------+
 ```
 
-### 2.10 VIEWS Table
+### 2.10 VIEWS
 
 > This system table is available starting from version V2.0.5.
 
@@ -369,9 +374,9 @@ IoTDB> select * from information_schema.views
 ```
 
 
-### 2.11 MODELS Table
+### 2.11 MODELS
 
-> This system table is available starting from version V 2.0.5 and has been discontinued since version V 2.0.8.
+> This system table is available starting from version V 2.0.5 and has been discontinued since version V 2.0.8-beta.
 
 * Contains information about all models in the database.
 * The table structure is as follows:
@@ -402,7 +407,7 @@ IoTDB> select * from information_schema.models where model_type = 'BUILT_IN_FORE
 ```
 
 
-### 2.12 FUNCTIONS Table
+### 2.12 FUNCTIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -434,7 +439,7 @@ IoTDB> select * from information_schema.functions where function_type='built-in
 ```
 
 
-### 2.13 CONFIGURATIONS Table
+### 2.13 CONFIGURATIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -473,7 +478,7 @@ IoTDB> select * from information_schema.configurations
 ```
 
 
-### 2.14 KEYWORDS Table
+### 2.14 KEYWORDS
 
 > This system table is available starting from version V2.0.5.
 
@@ -506,7 +511,7 @@ IoTDB> select * from information_schema.keywords limit 10
 ```
 
 
-### 2.15 NODES Table
+### 2.15 NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -538,7 +543,7 @@ IoTDB> select * from information_schema.nodes
 ```
 
 
-### 2.16 CONFIG\_NODES Table
+### 2.16 CONFIG\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -564,7 +569,7 @@ IoTDB> select * from information_schema.config_nodes
 ```
 
 
-### 2.17 DATA\_NODES Table
+### 2.17 DATA\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -594,9 +599,9 @@ IoTDB> select * from information_schema.data_nodes
 +-------+---------------+-----------------+-----------+--------+--------+-------------------+---------------------+
 ```
 
-### 2.18 CONNECTIONS Table
+### 2.18 CONNECTIONS
 
-> This system table is available starting from version V 2.0.8
+> This system table is available starting from version V 2.0.8-beta
 
 * Contains all connections in the cluster.
 * The table structure is as follows:
@@ -621,9 +626,9 @@ IoTDB> select * from information_schema.connections;
 +-----------+-------+----------+---------+-----------------------------+---------+
 ```
 
-### 2.19 CURRENT_QUERIES Table
+### 2.19 CURRENT_QUERIES
 
-> This system table is available starting from version V 2.0.8
+> This system table is available starting from version V 2.0.8-beta
 
 * Contains all queries whose execution end time falls within the range `[now() - query_cost_stat_window, now())`, including currently executing queries. The `query_cost_stat_window` parameter represents the query cost statistics window. Its default value is 0 and can be configured via the `iotdb-system.properties` configuration file.
 * The table structure is as follows:
@@ -652,9 +657,9 @@ IoTDB> select * from information_schema.current_queries;
 +-----------------------+-------+-----------------------------+--------+-----------+---------+------------------------------------------------+----+---------+
 ```
 
-### 2.20 QUERIES_COSTS_HISTOGRAM Table
+### 2.20 QUERIES_COSTS_HISTOGRAM
 
-> This system table is available starting from version V 2.0.8
+> This system table is available starting from version V 2.0.8-beta
 
 * Contains a histogram of query execution times within the past `query_cost_stat_window` period (only statistics for completed SQL queries). The `query_cost_stat_window` parameter represents the query cost statistics window. Its default value is 0 and can be configured via the `iotdb-system.properties` configuration file.
 * The table structure is as follows:
@@ -686,6 +691,31 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES
+
+> This system table is available starting from version V 2.0.8-beta
+
+* Displays services (MQTT service, REST service) on all active DataNodes (with RUNNING or READ-ONLY status).
+* Table structure:
+
+| Column Name   | Data Type | Column Type | Description                     |
+|---------------|-----------|-------------|---------------------------------|
+| service_name  | STRING    | TAG         | Service Name                    |
+| datanode_id   | INT32     | ATTRIBUTE   | DataNode ID where service runs  |
+| state         | STRING    | ATTRIBUTE   | Service status: RUNNING/STOPPED |
+
+
+* Query example:
+
+```sql
+IoTDB> SELECT * FROM information_schema.services
++------------+-----------+---------+
+|service_name|datanode_id|state    |
++------------+-----------+---------+
+|MQTT        |1          |STOPPED  |
+|REST        |1          |RUNNING  |
++------------+-----------+---------+
+```
 
 ## 3. Permission Description
 
diff --git a/src/UserGuide/Master/Table/Reference/System-Tables_timecho.md b/src/UserGuide/Master/Table/Reference/System-Tables_timecho.md
index 7bb37e58c..6204d2a03 100644
--- a/src/UserGuide/Master/Table/Reference/System-Tables_timecho.md
+++ b/src/UserGuide/Master/Table/Reference/System-Tables_timecho.md
@@ -23,6 +23,10 @@
 
 IoTDB has a built-in system database called `INFORMATION_SCHEMA`, which contains a series of system tables for storing IoTDB runtime information (such as currently executing SQL statements, etc.). Currently, the `INFORMATION_SCHEMA` database only supports read operations.
 
+> 💡 **[V2.0.8 Version Update]**<br>
+> 👉 Added four system tables: **[CONNECTIONS](#_2-18-connections)** (real-time connection tracking), **[CURRENT_QUERIES](#_2-19-current-queries)** (active query monitoring), **[QUERIES_COSTS_HISTOGRAM](#_2-20-queries-costs-histogram)** (query latency distribution), **[SERVICES](#_2-21-services)** (service status management), enhancing cluster maintenance and performance analysis.
+
+
 ## 1. System Database
 
 * ​**Name**​: `INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. System Tables
 
-* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM` (detailed descriptions in later sections)
+* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`, `SERVICES` (detailed descriptions in later sections)
 * ​**Operations**​: Read-only, only supports `SELECT`, `COUNT/SHOW DEVICES`, `DESC`. Any modifications to table structure or content are not allowed and will result in an error: `"The database 'information_schema' can only be queried."  `
 * ​**Column Names**​: System table column names are all lowercase by default and separated by underscores (`_`).
 
@@ -343,7 +348,7 @@ IoTDB> select * from information_schema.topics
 +----------+----------------------------------------------------------------+
 ```
 
-### 2.10 VIEWS Table
+### 2.10 VIEWS
 
 > This system table is available starting from version V2.0.5.
 
@@ -369,7 +374,7 @@ IoTDB> select * from information_schema.views
 ```
 
 
-### 2.11 MODELS Table
+### 2.11 MODELS
 
 > This system table is available starting from version V 2.0.5 and has been discontinued since version V 2.0.8.
 
@@ -402,7 +407,7 @@ IoTDB> select * from information_schema.models where model_type = 'BUILT_IN_FORE
 ```
 
 
-### 2.12 FUNCTIONS Table
+### 2.12 FUNCTIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -434,7 +439,7 @@ IoTDB> select * from information_schema.functions where function_type='built-in
 ```
 
 
-### 2.13 CONFIGURATIONS Table
+### 2.13 CONFIGURATIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -473,7 +478,7 @@ IoTDB> select * from information_schema.configurations
 ```
 
 
-### 2.14 KEYWORDS Table
+### 2.14 KEYWORDS
 
 > This system table is available starting from version V2.0.5.
 
@@ -506,7 +511,7 @@ IoTDB> select * from information_schema.keywords limit 10
 ```
 
 
-### 2.15 NODES Table
+### 2.15 NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -538,7 +543,7 @@ IoTDB> select * from information_schema.nodes
 ```
 
 
-### 2.16 CONFIG\_NODES Table
+### 2.16 CONFIG\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -564,7 +569,7 @@ IoTDB> select * from information_schema.config_nodes
 ```
 
 
-### 2.17 DATA\_NODES Table
+### 2.17 DATA\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -594,7 +599,7 @@ IoTDB> select * from information_schema.data_nodes
 +-------+---------------+-----------------+-----------+--------+--------+-------------------+---------------------+
 ```
 
-### 2.18 CONNECTIONS Table
+### 2.18 CONNECTIONS
 
 > This system table is available starting from version V 2.0.8
 
@@ -621,7 +626,7 @@ IoTDB> select * from information_schema.connections;
 +-----------+-------+----------+---------+-----------------------------+---------+
 ```
 
-### 2.19 CURRENT_QUERIES Table
+### 2.19 CURRENT_QUERIES
 
 > This system table is available starting from version V 2.0.8
 
@@ -652,7 +657,7 @@ IoTDB> select * from information_schema.current_queries;
 +-----------------------+-------+-----------------------------+--------+-----------+---------+------------------------------------------------+----+---------+
 ```
 
-### 2.20 QUERIES_COSTS_HISTOGRAM Table
+### 2.20 QUERIES_COSTS_HISTOGRAM
 
 > This system table is available starting from version V 2.0.8
 
@@ -686,6 +691,32 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES
+
+> This system table is available starting from version V 2.0.8
+
+* Displays services (MQTT service, REST service) on all active DataNodes (with RUNNING or READ-ONLY status).
+* Table structure:
+
+| Column Name   | Data Type | Column Type | Description                     |
+|---------------|-----------|-------------|---------------------------------|
+| service_name  | STRING    | TAG         | Service Name                    |
+| datanode_id   | INT32     | ATTRIBUTE   | DataNode ID where service runs  |
+| state         | STRING    | ATTRIBUTE   | Service status: RUNNING/STOPPED |
+
+
+* Query example:
+
+```sql
+IoTDB> SELECT * FROM information_schema.services
++------------+-----------+---------+
+|service_name|datanode_id|state    |
++------------+-----------+---------+
+|MQTT        |1          |STOPPED  |
+|REST        |1          |RUNNING  |
++------------+-----------+---------+
+```
+
 
 ## 3. Permission Description
 
diff --git a/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_apache.md b/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_apache.md
index 659e7a5d1..a91d8285c 100644
--- a/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_apache.md
+++ b/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_apache.md
@@ -341,7 +341,7 @@ IoTDB> SHOW REGIONS
 
 **Description**: Returns the RPC addresses and ports of all available DataNodes in the current cluster. Note: A DataNode is considered "available" if it is not in the REMOVING state.
 
-> This feature is supported starting from v2.0.8.
+> This feature is supported starting from v2.0.8-beta.
 
 **Syntax**:
 
@@ -367,6 +367,34 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> Supported since V2.0.8-beta
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_timecho.md b/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_timecho.md
index 02185325c..a2623ee21 100644
--- a/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_timecho.md
+++ b/src/UserGuide/Master/Table/User-Manual/Maintenance-commands_timecho.md
@@ -367,6 +367,34 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> Supported since V2.0.8
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/Master/Tree/Reference/Common-Config-Manual.md b/src/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
index 51f3aef71..cde488ff3 100644
--- a/src/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
+++ b/src/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
@@ -707,7 +707,7 @@ Different configuration parameters take effect in the following three ways:
 |:---:|:----------------------------------------|
 |Description| Time cost(ms) threshold for slow query. |
 |Type| Int32                                   |
-|Default| 10000                                   |
+|Default| 3000                                    |
 |Effective| Trigger                                 |
 
 * query\_timeout\_threshold
diff --git a/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_apache.md b/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_apache.md
index e72ce52fe..1ed8b8521 100644
--- a/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_apache.md
+++ b/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_apache.md
@@ -273,6 +273,35 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> This feature is supported starting from v2.0.8-beta.
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_timecho.md b/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_timecho.md
index 78ab71b7f..af354af4d 100644
--- a/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_timecho.md
+++ b/src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_timecho.md
@@ -273,6 +273,35 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> This feature is supported starting from v2.0.8.
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md b/src/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
index c7006be42..806855b6f 100644
--- a/src/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
+++ b/src/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
@@ -1532,10 +1532,10 @@ The `iotdb-system.properties` file contains various configurations for managing
 - slow_query_threshold
 
 | Name        | slow_query_threshold                   |
-| ----------- | -------------------------------------- |
+| ----------- |----------------------------------------|
 | Description | Time cost(ms) threshold for slow query |
 | Type        | long                                   |
-| Default     | 10000                                  |
+| Default     | 3000                                   |
 | Effective   | Hot reload                             |
 
 - query_cost_stat_window
diff --git a/src/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md b/src/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
index d32adb558..d2b565de2 100644
--- a/src/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
+++ b/src/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
@@ -1533,10 +1533,10 @@ The `iotdb-system.properties` file contains various configurations for managing
 - slow_query_threshold
 
 | Name        | slow_query_threshold                   |
-| ----------- | -------------------------------------- |
+| ----------- |----------------------------------------|
 | Description | Time cost(ms) threshold for slow query |
 | Type        | long                                   |
-| Default     | 10000                                  |
+| Default     | 3000                                   |
 | Effective   | Hot reload                             |
 
 - query_cost_stat_window
diff --git a/src/UserGuide/latest-Table/Reference/System-Tables_apache.md b/src/UserGuide/latest-Table/Reference/System-Tables_apache.md
index a67792b56..412ec50b2 100644
--- a/src/UserGuide/latest-Table/Reference/System-Tables_apache.md
+++ b/src/UserGuide/latest-Table/Reference/System-Tables_apache.md
@@ -23,6 +23,10 @@
 
 IoTDB has a built-in system database called `INFORMATION_SCHEMA`, which contains a series of system tables for storing IoTDB runtime information (such as currently executing SQL statements, etc.). Currently, the `INFORMATION_SCHEMA` database only supports read operations.
 
+> 💡 **[V2.0.8-beta Version Update]**<br>
+> 👉 Added four system tables: **[CONNECTIONS](#_2-18-connections)** (real-time connection tracking), **[CURRENT_QUERIES](#_2-19-current-queries)** (active query monitoring), **[QUERIES_COSTS_HISTOGRAM](#_2-20-queries-costs-histogram)** (query latency distribution), **[SERVICES](#_2-21-services)** (service status management), enhancing cluster maintenance and performance analysis.
+
+
 ## 1. System Database
 
 * ​**Name**​: `INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. System Tables
 
-* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES` , `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM` (detailed descriptions in later sections)
+* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES` , `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`, `SERVICES` (detailed descriptions in later sections)
 * ​**Operations**​: Read-only, only supports `SELECT`, `COUNT/SHOW DEVICES`, `DESC`. Any modifications to table structure or content are not allowed and will result in an error: `"The database 'information_schema' can only be queried."  `
 * ​**Column Names**​: System table column names are all lowercase by default and separated by underscores (`_`).
 
@@ -343,7 +348,7 @@ IoTDB> select * from information_schema.topics
 +----------+----------------------------------------------------------------+
 ```
 
-### 2.10 VIEWS Table
+### 2.10 VIEWS
 
 > This system table is available starting from version V2.0.5.
 
@@ -369,7 +374,7 @@ IoTDB> select * from information_schema.views
 ```
 
 
-### 2.11 MODELS Table
+### 2.11 MODELS
 
 > This system table is available starting from version V 2.0.5 and has been discontinued since version V 2.0.8-beta.
 
@@ -402,7 +407,7 @@ IoTDB> select * from information_schema.models where model_type = 'BUILT_IN_FORE
 ```
 
 
-### 2.12 FUNCTIONS Table
+### 2.12 FUNCTIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -434,7 +439,7 @@ IoTDB> select * from information_schema.functions where function_type='built-in
 ```
 
 
-### 2.13 CONFIGURATIONS Table
+### 2.13 CONFIGURATIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -473,7 +478,7 @@ IoTDB> select * from information_schema.configurations
 ```
 
 
-### 2.14 KEYWORDS Table
+### 2.14 KEYWORDS
 
 > This system table is available starting from version V2.0.5.
 
@@ -506,7 +511,7 @@ IoTDB> select * from information_schema.keywords limit 10
 ```
 
 
-### 2.15 NODES Table
+### 2.15 NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -538,7 +543,7 @@ IoTDB> select * from information_schema.nodes
 ```
 
 
-### 2.16 CONFIG\_NODES Table
+### 2.16 CONFIG\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -564,7 +569,7 @@ IoTDB> select * from information_schema.config_nodes
 ```
 
 
-### 2.17 DATA\_NODES Table
+### 2.17 DATA\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -594,7 +599,7 @@ IoTDB> select * from information_schema.data_nodes
 +-------+---------------+-----------------+-----------+--------+--------+-------------------+---------------------+
 ```
 
-### 2.18 CONNECTIONS Table
+### 2.18 CONNECTIONS
 
 > This system table is available starting from version V 2.0.8-beta
 
@@ -621,7 +626,7 @@ IoTDB> select * from information_schema.connections;
 +-----------+-------+----------+---------+-----------------------------+---------+
 ```
 
-### 2.19 CURRENT_QUERIES Table
+### 2.19 CURRENT_QUERIES
 
 > This system table is available starting from version V 2.0.8-beta
 
@@ -652,7 +657,7 @@ IoTDB> select * from information_schema.current_queries;
 +-----------------------+-------+-----------------------------+--------+-----------+---------+------------------------------------------------+----+---------+
 ```
 
-### 2.20 QUERIES_COSTS_HISTOGRAM Table
+### 2.20 QUERIES_COSTS_HISTOGRAM
 
 > This system table is available starting from version V 2.0.8-beta
 
@@ -686,6 +691,31 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES
+
+> This system table is available starting from version V 2.0.8-beta
+
+* Displays services (MQTT service, REST service) on all active DataNodes (with RUNNING or READ-ONLY status).
+* Table structure:
+
+| Column Name   | Data Type | Column Type | Description                     |
+|---------------|-----------|-------------|---------------------------------|
+| service_name  | STRING    | TAG         | Service Name                    |
+| datanode_id   | INT32     | ATTRIBUTE   | DataNode ID where service runs  |
+| state         | STRING    | ATTRIBUTE   | Service status: RUNNING/STOPPED |
+
+
+* Query example:
+
+```sql
+IoTDB> SELECT * FROM information_schema.services
++------------+-----------+---------+
+|service_name|datanode_id|state    |
++------------+-----------+---------+
+|MQTT        |1          |STOPPED  |
+|REST        |1          |RUNNING  |
++------------+-----------+---------+
+```
 
 ## 3. Permission Description
 
diff --git a/src/UserGuide/latest-Table/Reference/System-Tables_timecho.md b/src/UserGuide/latest-Table/Reference/System-Tables_timecho.md
index 7bb37e58c..6204d2a03 100644
--- a/src/UserGuide/latest-Table/Reference/System-Tables_timecho.md
+++ b/src/UserGuide/latest-Table/Reference/System-Tables_timecho.md
@@ -23,6 +23,10 @@
 
 IoTDB has a built-in system database called `INFORMATION_SCHEMA`, which contains a series of system tables for storing IoTDB runtime information (such as currently executing SQL statements, etc.). Currently, the `INFORMATION_SCHEMA` database only supports read operations.
 
+> 💡 **[V2.0.8 Version Update]**<br>
+> 👉 Added four system tables: **[CONNECTIONS](#_2-18-connections)** (real-time connection tracking), **[CURRENT_QUERIES](#_2-19-current-queries)** (active query monitoring), **[QUERIES_COSTS_HISTOGRAM](#_2-20-queries-costs-histogram)** (query latency distribution), **[SERVICES](#_2-21-services)** (service status management), enhancing cluster maintenance and performance analysis.
+
+
 ## 1. System Database
 
 * ​**Name**​: `INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. System Tables
 
-* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM` (detailed descriptions in later sections)
+* ​**Names**​: `DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`, `SERVICES` (detailed descriptions in later sections)
 * ​**Operations**​: Read-only, only supports `SELECT`, `COUNT/SHOW DEVICES`, `DESC`. Any modifications to table structure or content are not allowed and will result in an error: `"The database 'information_schema' can only be queried."  `
 * ​**Column Names**​: System table column names are all lowercase by default and separated by underscores (`_`).
 
@@ -343,7 +348,7 @@ IoTDB> select * from information_schema.topics
 +----------+----------------------------------------------------------------+
 ```
 
-### 2.10 VIEWS Table
+### 2.10 VIEWS
 
 > This system table is available starting from version V2.0.5.
 
@@ -369,7 +374,7 @@ IoTDB> select * from information_schema.views
 ```
 
 
-### 2.11 MODELS Table
+### 2.11 MODELS
 
 > This system table is available starting from version V 2.0.5 and has been discontinued since version V 2.0.8.
 
@@ -402,7 +407,7 @@ IoTDB> select * from information_schema.models where model_type = 'BUILT_IN_FORE
 ```
 
 
-### 2.12 FUNCTIONS Table
+### 2.12 FUNCTIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -434,7 +439,7 @@ IoTDB> select * from information_schema.functions where function_type='built-in
 ```
 
 
-### 2.13 CONFIGURATIONS Table
+### 2.13 CONFIGURATIONS
 
 > This system table is available starting from version V2.0.5.
 
@@ -473,7 +478,7 @@ IoTDB> select * from information_schema.configurations
 ```
 
 
-### 2.14 KEYWORDS Table
+### 2.14 KEYWORDS
 
 > This system table is available starting from version V2.0.5.
 
@@ -506,7 +511,7 @@ IoTDB> select * from information_schema.keywords limit 10
 ```
 
 
-### 2.15 NODES Table
+### 2.15 NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -538,7 +543,7 @@ IoTDB> select * from information_schema.nodes
 ```
 
 
-### 2.16 CONFIG\_NODES Table
+### 2.16 CONFIG\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -564,7 +569,7 @@ IoTDB> select * from information_schema.config_nodes
 ```
 
 
-### 2.17 DATA\_NODES Table
+### 2.17 DATA\_NODES
 
 > This system table is available starting from version V2.0.5.
 
@@ -594,7 +599,7 @@ IoTDB> select * from information_schema.data_nodes
 +-------+---------------+-----------------+-----------+--------+--------+-------------------+---------------------+
 ```
 
-### 2.18 CONNECTIONS Table
+### 2.18 CONNECTIONS
 
 > This system table is available starting from version V 2.0.8
 
@@ -621,7 +626,7 @@ IoTDB> select * from information_schema.connections;
 +-----------+-------+----------+---------+-----------------------------+---------+
 ```
 
-### 2.19 CURRENT_QUERIES Table
+### 2.19 CURRENT_QUERIES
 
 > This system table is available starting from version V 2.0.8
 
@@ -652,7 +657,7 @@ IoTDB> select * from information_schema.current_queries;
 +-----------------------+-------+-----------------------------+--------+-----------+---------+------------------------------------------------+----+---------+
 ```
 
-### 2.20 QUERIES_COSTS_HISTOGRAM Table
+### 2.20 QUERIES_COSTS_HISTOGRAM
 
 > This system table is available starting from version V 2.0.8
 
@@ -686,6 +691,32 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES
+
+> This system table is available starting from version V 2.0.8
+
+* Displays services (MQTT service, REST service) on all active DataNodes (with RUNNING or READ-ONLY status).
+* Table structure:
+
+| Column Name   | Data Type | Column Type | Description                     |
+|---------------|-----------|-------------|---------------------------------|
+| service_name  | STRING    | TAG         | Service Name                    |
+| datanode_id   | INT32     | ATTRIBUTE   | DataNode ID where service runs  |
+| state         | STRING    | ATTRIBUTE   | Service status: RUNNING/STOPPED |
+
+
+* Query example:
+
+```sql
+IoTDB> SELECT * FROM information_schema.services
++------------+-----------+---------+
+|service_name|datanode_id|state    |
++------------+-----------+---------+
+|MQTT        |1          |STOPPED  |
+|REST        |1          |RUNNING  |
++------------+-----------+---------+
+```
+
 
 ## 3. Permission Description
 
diff --git a/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_apache.md b/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_apache.md
index 4351cf4fa..a91d8285c 100644
--- a/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_apache.md
+++ b/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_apache.md
@@ -367,6 +367,34 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> Supported since V2.0.8-beta
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_timecho.md b/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_timecho.md
index 02185325c..a2623ee21 100644
--- a/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_timecho.md
+++ b/src/UserGuide/latest-Table/User-Manual/Maintenance-commands_timecho.md
@@ -367,6 +367,34 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> Supported since V2.0.8
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/latest/Reference/Common-Config-Manual.md b/src/UserGuide/latest/Reference/Common-Config-Manual.md
index 51f3aef71..cde488ff3 100644
--- a/src/UserGuide/latest/Reference/Common-Config-Manual.md
+++ b/src/UserGuide/latest/Reference/Common-Config-Manual.md
@@ -707,7 +707,7 @@ Different configuration parameters take effect in the following three ways:
 |:---:|:----------------------------------------|
 |Description| Time cost(ms) threshold for slow query. |
 |Type| Int32                                   |
-|Default| 10000                                   |
+|Default| 3000                                    |
 |Effective| Trigger                                 |
 
 * query\_timeout\_threshold
diff --git a/src/UserGuide/latest/User-Manual/Maintenance-commands_apache.md b/src/UserGuide/latest/User-Manual/Maintenance-commands_apache.md
index e72ce52fe..1ed8b8521 100644
--- a/src/UserGuide/latest/User-Manual/Maintenance-commands_apache.md
+++ b/src/UserGuide/latest/User-Manual/Maintenance-commands_apache.md
@@ -273,6 +273,35 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> This feature is supported starting from v2.0.8-beta.
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
 
 ## 2. Status Setting
 
diff --git a/src/UserGuide/latest/User-Manual/Maintenance-commands_timecho.md b/src/UserGuide/latest/User-Manual/Maintenance-commands_timecho.md
index 78ab71b7f..af354af4d 100644
--- a/src/UserGuide/latest/User-Manual/Maintenance-commands_timecho.md
+++ b/src/UserGuide/latest/User-Manual/Maintenance-commands_timecho.md
@@ -273,6 +273,35 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 View Service Information
+
+**Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster.
+
+> This feature is supported starting from v2.0.8.
+
+#### Syntax:
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### Examples:
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+Execution result:
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
 
 ## 2. Status Setting
 
diff --git a/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md b/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
index 672829976..ffa8684db 100644
--- a/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
+++ b/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_apache.md
@@ -1508,12 +1508,12 @@ IoTDB 配置文件位于 IoTDB 安装目录：`conf`文件夹下。
 
 - slow_query_threshold
 
-| 名字         | slow_query_threshold           |
-| ------------ | ------------------------------ |
-| 描述         | 慢查询的时间阈值。单位：毫秒。 |
-| 类型         | long                           |
-| 默认值       | 10000                          |
-| 改后生效方式 | 热加载                         |
+| 名字         | slow_query_threshold |
+| ------------ |----------------------|
+| 描述         | 慢查询的时间阈值。单位：毫秒。      |
+| 类型         | long                 |
+| 默认值       | 3000                 |
+| 改后生效方式 | 热加载                  |
 
 - query_cost_stat_window
 
diff --git a/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md b/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
index b6ce9a099..c17b1e8ed 100644
--- a/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
+++ b/src/zh/UserGuide/Master/Table/Reference/System-Config-Manual_timecho.md
@@ -1508,12 +1508,12 @@ IoTDB 配置文件位于 IoTDB 安装目录：`conf`文件夹下。
 
 - slow_query_threshold
 
-| 名字         | slow_query_threshold           |
-| ------------ | ------------------------------ |
-| 描述         | 慢查询的时间阈值。单位：毫秒。 |
-| 类型         | long                           |
-| 默认值       | 10000                          |
-| 改后生效方式 | 热加载                         |
+| 名字         | slow_query_threshold |
+| ------------ |----------------------|
+| 描述         | 慢查询的时间阈值。单位：毫秒。      |
+| 类型         | long                 |
+| 默认值       | 3000                 |
+| 改后生效方式 | 热加载                  |
 
 - query_cost_stat_window
 
diff --git a/src/zh/UserGuide/Master/Table/Reference/System-Tables_apache.md b/src/zh/UserGuide/Master/Table/Reference/System-Tables_apache.md
index 418b08f66..e4f9fb943 100644
--- a/src/zh/UserGuide/Master/Table/Reference/System-Tables_apache.md
+++ b/src/zh/UserGuide/Master/Table/Reference/System-Tables_apache.md
@@ -23,6 +23,10 @@
 
 IoTDB 内置系统数据库 `INFORMATION_SCHEMA`，其中包含一系列系统表，用于存储 IoTDB 运行时信息（如当前正在执行的 SQL 语句等）。目前`INFORMATION_SCHEMA`数据库只支持读操作。
 
+> 💡 **【V2.0.8-beta 版本更新】**<br>
+> 👉 新增四张系统表：**[CONNECTIONS](../Reference/System-Tables_timecho.md#_2-18-connections-表)**（实时连接追踪）、**[CURRENT\_QUERIES](#_2-19-current-queries-表)**（活跃查询监控）、**[QUERIES\_COSTS\_HISTOGRAM](#_2-20-queries-costs-histogram-表)**（查询耗时分布）、**[SERVICES](#_2-21-services-表)**（服务状态管理），助力集群运维与性能分析。
+
+
 ## 1. 系统库
 
 * 名称：`INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. 系统表
 
-* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`（详细介绍见后面小节）
+* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`、`SERVICES`（详细介绍见后面小节）
 * 操作：只读，只支持`SELECT`, `COUNT/SHOW DEVICES`, `DESC`，不支持对于表结构 / 内容的任意修改，如果修改将会报错：`"The database 'information_schema' can only be queried"`
 * 列名：系统表的列名均默认为小写，且用`_`分隔
 
@@ -369,7 +374,7 @@ IoTDB> select * from information_schema.views
 
 ### 2.11 MODELS 表
 
-> 该系统表从 V 2.0.5 版本开始提供，从V 2.0.8 版本开始不再提供
+> 该系统表从 V 2.0.5 版本开始提供，从V 2.0.8-beta 版本开始不再提供
 
 * 包含数据库内所有的模型信息
 * 表结构如下表所示：
@@ -589,7 +594,7 @@ IoTDB> select * from information_schema.data_nodes
 
 ### 2.18 CONNECTIONS 表
 
-> 该系统表从 V 2.0.8 版本开始提供
+> 该系统表从 V 2.0.8-beta 版本开始提供
 
 * 包含集群中所有连接。
 * 表结构如下表所示：
@@ -616,7 +621,7 @@ IoTDB> select * from information_schema.connections;
 
 ### 2.19 CURRENT\_QUERIES 表
 
-> 该系统表从 V 2.0.8 版本开始提供
+> 该系统表从 V 2.0.8-beta 版本开始提供
 
 * 包含所有执行结束时间在 `[now() - query_cost_stat_window, now())` 范围内的所有查询，也包括当前正在执行的查询。其中`query_cost_stat_window `代表查询耗时统计的窗口，默认值为 0 ，可通过配置文件`iotdb-system.properties`进行配置。
 * 表结构如下表所示：
@@ -647,7 +652,7 @@ IoTDB> select * from information_schema.current_queries;
 
 ### 2.20 QUERIES\_COSTS\_HISTOGRAM 表
 
-> 该系统表从 V 2.0.8 版本开始提供
+> 该系统表从 V 2.0.8-beta 版本开始提供
 
 * 包含过去 `query_cost_stat_window` 时间内的查询耗时的直方图（仅统计已经执行结束的 SQL），其中`query_cost_stat_window `代表查询耗时统计的窗口，默认值为 0 ，可通过配置文件`iotdb-system.properties`进行配置。
 * 表结构如下表所示：
@@ -678,6 +683,30 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 |[9,10)|   0|          1|
 +------+----+-----------+
 ```
+### 2.21 SERVICES 表
+
+> 该系统表从 V 2.0.8-beta 版本开始提供
+
+* 可展示所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务（MQTT 服务、REST 服务）。
+* 表结构如下表所示：
+
+| 列名          | 数据类型 | 列类型    | 说明                         |
+| --------------- | ---------- | ----------- | ------------------------------ |
+| service\_name | STRING   | TAG       | 服务名称                     |
+| datanode\_id  | INT32    | ATTRIBUTE | 所在 DataNode 的 ID          |
+| state         | STRING   | ATTRIBUTE | 服务状态： RUNNING / STOPPED |
+
+* 查询示例：
+
+```SQL
+IoTDB> select * from information_schema.services
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 3. 权限说明
 
diff --git a/src/zh/UserGuide/Master/Table/Reference/System-Tables_timecho.md b/src/zh/UserGuide/Master/Table/Reference/System-Tables_timecho.md
index e13fa2c59..300ed1593 100644
--- a/src/zh/UserGuide/Master/Table/Reference/System-Tables_timecho.md
+++ b/src/zh/UserGuide/Master/Table/Reference/System-Tables_timecho.md
@@ -23,6 +23,9 @@
 
 IoTDB 内置系统数据库 `INFORMATION_SCHEMA`，其中包含一系列系统表，用于存储 IoTDB 运行时信息（如当前正在执行的 SQL 语句等）。目前`INFORMATION_SCHEMA`数据库只支持读操作。
 
+> 💡 **【V2.0.8 版本更新】**<br>
+> 👉 新增四张系统表：**[CONNECTIONS](../Reference/System-Tables_timecho.md#_2-18-connections-表)**（实时连接追踪）、**[CURRENT\_QUERIES](#_2-19-current-queries-表)**（活跃查询监控）、**[QUERIES\_COSTS\_HISTOGRAM](#_2-20-queries-costs-histogram-表)**（查询耗时分布）、**[SERVICES](#_2-21-services-表)**（服务状态管理），助力集群运维与性能分析。
+
 ## 1. 系统库
 
 * 名称：`INFORMATION_SCHEMA`
@@ -57,6 +60,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +70,7 @@ IoTDB> show tables from information_schema
 
 ## 2. 系统表
 
-* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`（详细介绍见后面小节）
+* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`、`SERVICES`（详细介绍见后面小节）
 * 操作：只读，只支持`SELECT`, `COUNT/SHOW DEVICES`, `DESC`，不支持对于表结构 / 内容的任意修改，如果修改将会报错：`"The database 'information_schema' can only be queried"`
 * 列名：系统表的列名均默认为小写，且用`_`分隔
 
@@ -679,6 +683,30 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES 表
+
+> 该系统表从 V 2.0.8 版本开始提供
+
+* 可展示所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务（MQTT 服务、REST 服务）。
+* 表结构如下表所示：
+
+| 列名          | 数据类型 | 列类型    | 说明                         |
+| --------------- | ---------- | ----------- | ------------------------------ |
+| service\_name | STRING   | TAG       | 服务名称                     |
+| datanode\_id  | INT32    | ATTRIBUTE | 所在 DataNode 的 ID          |
+| state         | STRING   | ATTRIBUTE | 服务状态： RUNNING / STOPPED |
+
+* 查询示例：
+
+```SQL
+IoTDB> select * from information_schema.services
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 3. 权限说明
 
diff --git a/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_apache.md b/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_apache.md
index 8c74bea38..bcb9f7336 100644
--- a/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_apache.md
+++ b/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_apache.md
@@ -340,7 +340,7 @@ IoTDB> SHOW REGIONS
 
 **含义**：返回当前集群所有可用的 DataNode 的 RPC 地址和端口。注意：这里对于“可用”的定义为：处于非 REMOVING 状态的 DN 节点。
 
-> V2.0.8 起支持该功能
+> V2.0.8-beta 起支持该功能
 
 #### 语法：
 
@@ -366,6 +366,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8-beta 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_timecho.md b/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_timecho.md
index aadcb8b29..2323c09fa 100644
--- a/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_timecho.md
+++ b/src/zh/UserGuide/Master/Table/User-Manual/Maintenance-statement_timecho.md
@@ -366,6 +366,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/Master/Tree/Reference/Common-Config-Manual.md b/src/zh/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
index 02ada5951..c18f36ee1 100644
--- a/src/zh/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
+++ b/src/zh/UserGuide/Master/Tree/Reference/Common-Config-Manual.md
@@ -682,7 +682,7 @@ IoTDB ConfigNode 和 DataNode 的公共配置参数位于 `conf` 目录下。
 |:---:|:-----------------------|
 |描述| 慢查询的时间阈值。单位：毫秒。        |
 |类型| Int32                  |
-|默认值| 10000                  |
+|默认值| 3000                   |
 |改后生效方式| 热加载                    |
 
 * query\_timeout\_threshold
diff --git a/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_apache.md b/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_apache.md
index 45b37b014..1cba1564c 100644
--- a/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_apache.md
+++ b/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_apache.md
@@ -274,6 +274,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8-beta 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_timecho.md b/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_timecho.md
index 93259a49a..012236f2f 100644
--- a/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_timecho.md
+++ b/src/zh/UserGuide/Master/Tree/User-Manual/Maintenance-statement_timecho.md
@@ -274,6 +274,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md b/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
index 672829976..ffa8684db 100644
--- a/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
+++ b/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_apache.md
@@ -1508,12 +1508,12 @@ IoTDB 配置文件位于 IoTDB 安装目录：`conf`文件夹下。
 
 - slow_query_threshold
 
-| 名字         | slow_query_threshold           |
-| ------------ | ------------------------------ |
-| 描述         | 慢查询的时间阈值。单位：毫秒。 |
-| 类型         | long                           |
-| 默认值       | 10000                          |
-| 改后生效方式 | 热加载                         |
+| 名字         | slow_query_threshold |
+| ------------ |----------------------|
+| 描述         | 慢查询的时间阈值。单位：毫秒。      |
+| 类型         | long                 |
+| 默认值       | 3000                 |
+| 改后生效方式 | 热加载                  |
 
 - query_cost_stat_window
 
diff --git a/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md b/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
index b6ce9a099..c17b1e8ed 100644
--- a/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
+++ b/src/zh/UserGuide/latest-Table/Reference/System-Config-Manual_timecho.md
@@ -1508,12 +1508,12 @@ IoTDB 配置文件位于 IoTDB 安装目录：`conf`文件夹下。
 
 - slow_query_threshold
 
-| 名字         | slow_query_threshold           |
-| ------------ | ------------------------------ |
-| 描述         | 慢查询的时间阈值。单位：毫秒。 |
-| 类型         | long                           |
-| 默认值       | 10000                          |
-| 改后生效方式 | 热加载                         |
+| 名字         | slow_query_threshold |
+| ------------ |----------------------|
+| 描述         | 慢查询的时间阈值。单位：毫秒。      |
+| 类型         | long                 |
+| 默认值       | 3000                 |
+| 改后生效方式 | 热加载                  |
 
 - query_cost_stat_window
 
diff --git a/src/zh/UserGuide/latest-Table/Reference/System-Tables_apache.md b/src/zh/UserGuide/latest-Table/Reference/System-Tables_apache.md
index 0b8f5de6b..4bc268db0 100644
--- a/src/zh/UserGuide/latest-Table/Reference/System-Tables_apache.md
+++ b/src/zh/UserGuide/latest-Table/Reference/System-Tables_apache.md
@@ -23,6 +23,10 @@
 
 IoTDB 内置系统数据库 `INFORMATION_SCHEMA`，其中包含一系列系统表，用于存储 IoTDB 运行时信息（如当前正在执行的 SQL 语句等）。目前`INFORMATION_SCHEMA`数据库只支持读操作。
 
+> 💡 **【V2.0.8-beta 版本更新】**<br>
+> 👉 新增四张系统表：**[CONNECTIONS](#_2-18-connections-表)**（实时连接追踪）、**[CURRENT\_QUERIES](#_2-19-current-queries-表)**（活跃查询监控）、**[QUERIES\_COSTS\_HISTOGRAM](#_2-20-queries-costs-histogram-表)**（查询耗时分布）、**[SERVICES](#_2-21-services-表)**（服务状态管理），助力集群运维与性能分析。
+
+
 ## 1. 系统库
 
 * 名称：`INFORMATION_SCHEMA`
@@ -57,6 +61,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +71,7 @@ IoTDB> show tables from information_schema
 
 ## 2. 系统表
 
-* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`（详细介绍见后面小节）
+* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`、`SERVICES`（详细介绍见后面小节）
 * 操作：只读，只支持`SELECT`, `COUNT/SHOW DEVICES`, `DESC`，不支持对于表结构 / 内容的任意修改，如果修改将会报错：`"The database 'information_schema' can only be queried"`
 * 列名：系统表的列名均默认为小写，且用`_`分隔
 
@@ -678,6 +683,30 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 |[9,10)|   0|          1|
 +------+----+-----------+
 ```
+### 2.21 SERVICES 表
+
+> 该系统表从 V 2.0.8-beta 版本开始提供
+
+* 可展示所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务（MQTT 服务、REST 服务）。
+* 表结构如下表所示：
+
+| 列名          | 数据类型 | 列类型    | 说明                         |
+| --------------- | ---------- | ----------- | ------------------------------ |
+| service\_name | STRING   | TAG       | 服务名称                     |
+| datanode\_id  | INT32    | ATTRIBUTE | 所在 DataNode 的 ID          |
+| state         | STRING   | ATTRIBUTE | 服务状态： RUNNING / STOPPED |
+
+* 查询示例：
+
+```SQL
+IoTDB> select * from information_schema.services
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 3. 权限说明
 
diff --git a/src/zh/UserGuide/latest-Table/Reference/System-Tables_timecho.md b/src/zh/UserGuide/latest-Table/Reference/System-Tables_timecho.md
index e13fa2c59..5f03bbc77 100644
--- a/src/zh/UserGuide/latest-Table/Reference/System-Tables_timecho.md
+++ b/src/zh/UserGuide/latest-Table/Reference/System-Tables_timecho.md
@@ -23,6 +23,9 @@
 
 IoTDB 内置系统数据库 `INFORMATION_SCHEMA`，其中包含一系列系统表，用于存储 IoTDB 运行时信息（如当前正在执行的 SQL 语句等）。目前`INFORMATION_SCHEMA`数据库只支持读操作。
 
+> 💡 **【V2.0.8 版本更新】**<br>
+> 👉 新增四张系统表：**[CONNECTIONS](#_2-18-connections-表)**（实时连接追踪）、**[CURRENT\_QUERIES](#_2-19-current-queries-表)**（活跃查询监控）、**[QUERIES\_COSTS\_HISTOGRAM](#_2-20-queries-costs-histogram-表)**（查询耗时分布）、**[SERVICES](#_2-21-services-表)**（服务状态管理），助力集群运维与性能分析。
+
 ## 1. 系统库
 
 * 名称：`INFORMATION_SCHEMA`
@@ -57,6 +60,7 @@ IoTDB> show tables from information_schema
 |                queries|    INF|
 |queries_costs_histogram|    INF|
 |                regions|    INF|
+|               services|    INF|
 |          subscriptions|    INF|
 |                 tables|    INF|
 |                 topics|    INF|
@@ -66,7 +70,7 @@ IoTDB> show tables from information_schema
 
 ## 2. 系统表
 
-* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`（详细介绍见后面小节）
+* 名称：`DATABASES`, `TABLES`, `REGIONS`, `QUERIES`, `COLUMNS`, `PIPES`, `PIPE_PLUGINS`, `SUBSCRIPTION`, `TOPICS`, `VIEWS`, `MODELS`, `FUNCTIONS`, `CONFIGURATIONS`, `KEYWORDS`, `NODES`, `CONFIG_NODES`, `DATA_NODES`, `CONNECTIONS`, `CURRENT_QUERIES`, `QUERIES_COSTS_HISTOGRAM`、`SERVICES`（详细介绍见后面小节）
 * 操作：只读，只支持`SELECT`, `COUNT/SHOW DEVICES`, `DESC`，不支持对于表结构 / 内容的任意修改，如果修改将会报错：`"The database 'information_schema' can only be queried"`
 * 列名：系统表的列名均默认为小写，且用`_`分隔
 
@@ -679,6 +683,30 @@ IoTDB> select * from information_schema.queries_costs_histogram limit 10
 +------+----+-----------+
 ```
 
+### 2.21 SERVICES 表
+
+> 该系统表从 V 2.0.8 版本开始提供
+
+* 可展示所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务（MQTT 服务、REST 服务）。
+* 表结构如下表所示：
+
+| 列名          | 数据类型 | 列类型    | 说明                         |
+| --------------- | ---------- | ----------- | ------------------------------ |
+| service\_name | STRING   | TAG       | 服务名称                     |
+| datanode\_id  | INT32    | ATTRIBUTE | 所在 DataNode 的 ID          |
+| state         | STRING   | ATTRIBUTE | 服务状态： RUNNING / STOPPED |
+
+* 查询示例：
+
+```SQL
+IoTDB> select * from information_schema.services
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 3. 权限说明
 
diff --git a/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_apache.md b/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_apache.md
index 15da30a0c..bcb9f7336 100644
--- a/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_apache.md
+++ b/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_apache.md
@@ -366,6 +366,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8-beta 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_timecho.md b/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_timecho.md
index aadcb8b29..2323c09fa 100644
--- a/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_timecho.md
+++ b/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_timecho.md
@@ -366,6 +366,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.11 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/latest/Reference/Common-Config-Manual.md b/src/zh/UserGuide/latest/Reference/Common-Config-Manual.md
index 02ada5951..c18f36ee1 100644
--- a/src/zh/UserGuide/latest/Reference/Common-Config-Manual.md
+++ b/src/zh/UserGuide/latest/Reference/Common-Config-Manual.md
@@ -682,7 +682,7 @@ IoTDB ConfigNode 和 DataNode 的公共配置参数位于 `conf` 目录下。
 |:---:|:-----------------------|
 |描述| 慢查询的时间阈值。单位：毫秒。        |
 |类型| Int32                  |
-|默认值| 10000                  |
+|默认值| 3000                   |
 |改后生效方式| 热加载                    |
 
 * query\_timeout\_threshold
diff --git a/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_apache.md b/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_apache.md
index 45b37b014..1cba1564c 100644
--- a/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_apache.md
+++ b/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_apache.md
@@ -274,6 +274,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8-beta 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置
 
diff --git a/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_timecho.md b/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_timecho.md
index 93259a49a..012236f2f 100644
--- a/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_timecho.md
+++ b/src/zh/UserGuide/latest/User-Manual/Maintenance-statement_timecho.md
@@ -274,6 +274,37 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.8 查看服务信息
+
+**含义**：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。
+
+> V2.0.8 起支持该功能
+
+#### 语法：
+
+```SQL
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+#### 示例：
+
+```SQL
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+执行结果如下：
+
+```SQL
++------------+-----------+-------+
+|service_name|datanode_id|  state|
++------------+-----------+-------+
+|        MQTT|          1|STOPPED|
+|        REST|          1|RUNNING|
++------------+-----------+-------+
+```
 
 ## 2. 状态设置