diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 98982f6d..06485805 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -10,6 +10,7 @@ import { store } from "./store";
 import { Provider } from "react-redux";
 import theme from "./theme";
 import {errorConfigStore} from "@/utils/errorConfigStore.ts";
+import { setCachedHomePageUrl, getCachedHomePageUrl } from "@/utils/systemParam";
 import "@/i18n";
 
 function showLoadingUI() {
@@ -43,10 +44,84 @@ function showLoadingUI() {
   `;
 }
 
+/**
+ * 从 localStorage 读取 JWT token
+ */
+function getAuthToken(): string | null {
+  const session = localStorage.getItem('session');
+  if (session) {
+    try {
+      return JSON.parse(session).token || null;
+    } catch {
+      return null;
+    }
+  }
+  return null;
+}
+
+/**
+ * 自定义首页URL重定向
+ * 在任何渲染之前检查系统参数 sys.home.page.url，若已配置则立即跳转，确保无闪烁。
+ * 使用原始 fetch 但携带 JWT token，避免已登录用户仍收到 401。
+ */
+async function checkHomePageRedirect(): Promise<{ redirected: boolean; authNeeded: boolean }> {
+  if (window.location.pathname !== '/') {
+    return { redirected: false, authNeeded: false };
+  }
+
+  const headers: Record<string, string> = { 'Content-Type': 'application/json' };
+  const token = getAuthToken();
+  if (token) {
+    headers['Authorization'] = `Bearer ${token}`;
+  }
+
+  try {
+    const response = await fetch('/api/sys-param/sys.home.page.url', {
+      method: 'GET',
+      credentials: 'include',
+      headers,
+    });
+    if (response.ok) {
+      const result = await response.json();
+      const url = result?.data?.paramValue?.trim();
+      if (url) {
+        setCachedHomePageUrl(url);
+        window.location.replace(url);
+        return { redirected: true, authNeeded: false };
+      }
+      // 参数存在但值为空 → 管理员已清除，清掉缓存
+      setCachedHomePageUrl(null);
+    } else if (response.status === 401) {
+      // 未登录，尝试从缓存读取
+      const cachedUrl = getCachedHomePageUrl();
+      if (cachedUrl) {
+        window.location.replace(cachedUrl);
+        return { redirected: true, authNeeded: false };
+      }
+      // 未登录且无缓存，需要弹出登录框
+      return { redirected: false, authNeeded: true };
+    }
+  } catch {
+    // 网络错误等，尝试从缓存读取
+    const cachedUrl = getCachedHomePageUrl();
+    if (cachedUrl) {
+      window.location.replace(cachedUrl);
+      return { redirected: true, authNeeded: false };
+    }
+  }
+  return { redirected: false, authNeeded: false };
+}
+
 async function bootstrap() {
   const container = document.getElementById("root");
   if (!container) return;
 
+  // 在任何 UI 渲染之前检查自定义首页重定向
+  const { redirected, authNeeded } = await checkHomePageRedirect();
+  if (redirected) {
+    return;
+  }
+
   showLoadingUI();
 
   try {
@@ -72,6 +147,13 @@ async function bootstrap() {
       </Provider>
     </StrictMode>
   );
+
+  // 未登录且无缓存时，等 React 挂载后弹出登录框
+  if (authNeeded) {
+    setTimeout(() => {
+      window.dispatchEvent(new CustomEvent('show-login'));
+    }, 500);
+  }
 }
 
 bootstrap();
diff --git a/frontend/src/pages/Layout/Header.tsx b/frontend/src/pages/Layout/Header.tsx
index 37359fb0..9271977d 100644
--- a/frontend/src/pages/Layout/Header.tsx
+++ b/frontend/src/pages/Layout/Header.tsx
@@ -1,11 +1,13 @@
 import { User, Globe, LogIn, UserPlus, Sparkles, Shield } from "lucide-react"
-import { memo, useState, useEffect } from "react";
+import { memo, useState, useEffect, useCallback } from "react";
 import { NavLink } from "react-router";
 import { Button, Dropdown, message } from "antd"
 import type { MenuProps } from 'antd'
 import { LoginDialog } from "./LoginDialog"
 import { SignupDialog } from "./SignupDialog"
 import { post, get } from "@/utils/request.ts";
+import { getCachedHomePageUrl, setCachedHomePageUrl } from "@/utils/systemParam";
+import { getHomePageUrl } from "@/utils/systemParam";
 import { useTranslation } from "react-i18next";
 import i18n from "@/i18n";
 
@@ -121,6 +123,19 @@ export function Header() {
     setSignupOpen(true);
   };
 
+  const handleHomeClick = useCallback((e: React.MouseEvent) => {
+    const homeUrl = getCachedHomePageUrl();
+    if (homeUrl) {
+      e.preventDefault();
+      window.location.href = homeUrl;
+    }
+  }, []);
+
+  // 已登录时后台刷新缓存，保持与后端同步
+  useEffect(() => {
+    getHomePageUrl().then(url => setCachedHomePageUrl(url)).catch(() => {});
+  }, []);
+
   // 检测是否在 ME 环境
   const isSSOAvailable = () => {
     const hostname = window.location.hostname;
@@ -269,7 +284,7 @@ export function Header() {
         <div className="flex h-14 items-center justify-between px-6">
           <div className="flex items-center gap-2">
             <div className="flex items-center gap-2">
-              <NavLink to="/" className="flex items-center gap-2 cursor-pointer">
+              <NavLink to="/" onClick={handleHomeClick} className="flex items-center gap-2 cursor-pointer">
                 <div className="w-8 h-8 bg-gradient-to-br from-blue-500 to-indigo-600 rounded-lg flex items-center justify-center">
                   <Sparkles className="w-5 h-5 text-white" />
                 </div>
diff --git a/frontend/src/utils/systemParam.ts b/frontend/src/utils/systemParam.ts
index 44412806..8e95c348 100644
--- a/frontend/src/utils/systemParam.ts
+++ b/frontend/src/utils/systemParam.ts
@@ -1,7 +1,27 @@
 /**
- * System Parameter API
  * 系统参数 API 接口
  */
+
+// localStorage 缓存 key
+const HOME_PAGE_URL_CACHE_KEY = 'datamate:homePageUrl';
+
+/**
+ * 将首页URL写入缓存
+ */
+export function setCachedHomePageUrl(url: string | null) {
+  if (url) {
+    localStorage.setItem(HOME_PAGE_URL_CACHE_KEY, url);
+  } else {
+    localStorage.removeItem(HOME_PAGE_URL_CACHE_KEY);
+  }
+}
+
+/**
+ * 同步读取缓存的首页URL
+ */
+export function getCachedHomePageUrl(): string | null {
+  return localStorage.getItem(HOME_PAGE_URL_CACHE_KEY);
+}
 import { get } from '@/utils/request';
 
 export interface SysParam {