diff --git a/tccli/plugins/cos/__init__.py b/tccli/plugins/cos/__init__.py
new file mode 100644
index 0000000000..f933bb2e3e
--- /dev/null
+++ b/tccli/plugins/cos/__init__.py
@@ -0,0 +1,43 @@
+# encoding: utf-8
+"""
+COS命令行工具插件
+将coscmd的所有命令集成到tencentcloud-cli中
+"""
+from .list_object import list_object
+
+service_name = "cos"
+service_version = "2021-02-24"
+
+_spec = {
+    "metadata": {
+        "serviceShortName": service_name,
+        "apiVersion": service_version,
+        "description": "COS (Cloud Object Storage) command line tool",
+    },
+    "actions": {
+        "list": {
+            "name": "列出文件",
+            "document": "List files on COS",
+            "input": "ListRequest",
+            "output": "ListResponse",
+            "action_caller": list_object,
+        }
+    },
+    "objects": {
+        "listRequest": {
+            "members": [
+                {"name": "bucket", "member": "string", "type": "string", "required": False, "document": "bucket id"},
+            ],
+        },
+        "listResponse": {
+            "members": [],
+        },
+    },
+    "version": "1.0",
+}
+
+
+def register_service(specs):
+    specs[service_name] = {
+        service_version: _spec,
+    }
diff --git a/tccli/plugins/cos/list_object.py b/tccli/plugins/cos/list_object.py
new file mode 100644
index 0000000000..9c1bbd0a0a
--- /dev/null
+++ b/tccli/plugins/cos/list_object.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from qcloud_cos import CosConfig
+from qcloud_cos import CosS3Client
+
+
+def list_object(args, parsed_globals):
+    secret_id = parsed_globals["secretId"]
+    secret_key = parsed_globals["secretKey"]
+    token = parsed_globals["token"]
+    region = parsed_globals["region"] or "ap-guangzhou"
+    endpoint = parsed_globals["endpoint"]
+
+    config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key, Token=token, Endpoint=endpoint)
+    client = CosS3Client(config)
+
+    response = client.list_objects(Bucket=args["bucket"])
+    if 'Contents' in response:
+        for content in response['Contents']:
+            print(content['Key'])