diff --git a/frontend/src/components/AdminLayout.tsx b/frontend/src/components/AdminLayout.tsx
index 457647a..59366ad 100644
--- a/frontend/src/components/AdminLayout.tsx
+++ b/frontend/src/components/AdminLayout.tsx
@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState, useMemo } from 'react';
 import { Layout, Menu, Button, theme, App } from 'antd';
 import {
   MenuFoldOutlined,
@@ -6,9 +6,12 @@ import {
   DashboardOutlined,
   SettingOutlined,
   LogoutOutlined,
+  SunOutlined,
+  MoonOutlined,
 } from '@ant-design/icons';
 import { Outlet, useNavigate, useLocation } from 'react-router-dom';
 import { useAuthStore } from '../stores/authStore';
+import { useThemeStore } from '../stores/themeStore';
 import { adminAuthService } from '../services/adminAuthService';
 
 const { Header, Sider, Content, Footer } = Layout;
@@ -23,6 +26,16 @@ const AdminLayout = () => {
   const adminUser = useAuthStore((state) => state.adminUser);
   const logout = useAuthStore((state) => state.logout);
   const { message } = App.useApp();
+  const { themeMode, toggleTheme } = useThemeStore();
+
+  // 根据当前路径计算应该展开的菜单
+  const openKeys = useMemo(() => {
+    const path = location.pathname;
+    if (path.startsWith('/admin/users')) {
+      return ['user'];
+    }
+    return [];
+  }, [location.pathname]);
 
   const handleLogout = async () => {
     try {
@@ -56,26 +69,34 @@ const AdminLayout = () => {
 
   return (
     <Layout style={{ minHeight: '100vh' }}>
-      <Sider trigger={null} collapsible collapsed={collapsed}>
+      <Sider 
+        trigger={null} 
+        collapsible 
+        collapsed={collapsed}
+        style={{
+          background: themeMode === 'dark' ? '#001529' : '#ffffff',
+        }}
+      >
         <div
           style={{
             height: 32,
             margin: 16,
-            background: 'rgba(255, 255, 255, 0.2)',
+            background: themeMode === 'dark' ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.05)',
             borderRadius: 6,
             display: 'flex',
             alignItems: 'center',
             justifyContent: 'center',
-            color: 'white',
+            color: themeMode === 'dark' ? 'white' : '#1890ff',
             fontWeight: 'bold',
           }}
         >
           {collapsed ? '运营' : '运营管理系统'}
         </div>
         <Menu
-          theme="dark"
+          theme={themeMode === 'dark' ? 'dark' : 'light'}
           mode="inline"
           selectedKeys={[location.pathname]}
+          openKeys={openKeys}
           items={menuItems}
           onClick={({ key }) => navigate(key)}
         />
@@ -99,14 +120,23 @@ const AdminLayout = () => {
               fontSize: '16px',
               width: 64,
               height: 64,
+              outline: 'none',
             }}
           />
           <div style={{ display: 'flex', alignItems: 'center', gap: 16 }}>
+            <Button
+              type="text"
+              icon={themeMode === 'dark' ? <SunOutlined /> : <MoonOutlined />}
+              onClick={toggleTheme}
+              style={{ outline: 'none' }}
+              title={themeMode === 'dark' ? '切换到亮色主题' : '切换到暗色主题'}
+            />
             <span>欢迎, {adminUser?.username}</span>
             <Button
               type="text"
               icon={<LogoutOutlined />}
               onClick={handleLogout}
+              style={{ outline: 'none' }}
             >
               退出
             </Button>
@@ -123,7 +153,12 @@ const AdminLayout = () => {
         >
           <Outlet />
         </Content>
-        <Footer style={{ textAlign: 'center' }}>
+        <Footer 
+          style={{ 
+            textAlign: 'center',
+            background: themeMode === 'dark' ? '#001529' : '#ffffff',
+          }}
+        >
           梦幻西游一站式运营管理平台 ©2025 Created by JGE
         </Footer>
       </Layout>
diff --git a/frontend/src/components/ThemeProvider.tsx b/frontend/src/components/ThemeProvider.tsx
new file mode 100644
index 0000000..25a9cbd
--- /dev/null
+++ b/frontend/src/components/ThemeProvider.tsx
@@ -0,0 +1,34 @@
+import { ReactNode, useMemo } from 'react';
+import { ConfigProvider, theme } from 'antd';
+import zhCN from 'antd/locale/zh_CN';
+import { useThemeStore } from '../stores/themeStore';
+import { getThemeByMode } from '../theme';
+
+interface ThemeProviderProps {
+  children: ReactNode;
+}
+
+// 主题提供者组件
+export const ThemeProvider = ({ children }: ThemeProviderProps) => {
+  const { themeMode } = useThemeStore();
+
+  // 根据主题模式获取主题配置和算法
+  const currentTheme = useMemo(() => {
+    const customTheme = getThemeByMode(themeMode);
+    const algorithm = themeMode === 'dark' ? theme.darkAlgorithm : theme.defaultAlgorithm;
+    
+    return {
+      algorithm,
+      ...customTheme,
+    };
+  }, [themeMode]);
+
+  return (
+    <ConfigProvider 
+      locale={zhCN} 
+      theme={currentTheme}
+    >
+      {children}
+    </ConfigProvider>
+  );
+};
diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 051179f..0be09e1 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -1,24 +1,17 @@
 import { StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
 import { RouterProvider } from 'react-router-dom';
-import { ConfigProvider, App, theme } from 'antd';
-import zhCN from 'antd/locale/zh_CN';
+import { App } from 'antd';
 import './index.css';
 import router from './router';
-import { appTheme } from './theme';
+import { ThemeProvider } from './components/ThemeProvider';
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    <ConfigProvider 
-      locale={zhCN} 
-      theme={{
-        algorithm: theme.defaultAlgorithm,
-        ...appTheme,
-      }}
-    >
+    <ThemeProvider>
       <App>
         <RouterProvider router={router} />
       </App>
-    </ConfigProvider>
+    </ThemeProvider>
   </StrictMode>,
 );
diff --git a/frontend/src/stores/themeStore.ts b/frontend/src/stores/themeStore.ts
new file mode 100644
index 0000000..3142b78
--- /dev/null
+++ b/frontend/src/stores/themeStore.ts
@@ -0,0 +1,34 @@
+import { create } from 'zustand';
+
+// 主题类型
+export type ThemeMode = 'light' | 'dark';
+
+// 从 localStorage 读取主题模式
+const getInitialThemeMode = (): ThemeMode => {
+  const savedTheme = localStorage.getItem('adminThemeMode');
+  if (savedTheme === 'light' || savedTheme === 'dark') {
+    return savedTheme;
+  }
+  return 'dark'; // 默认暗色主题
+};
+
+// 主题状态接口
+interface ThemeState {
+  themeMode: ThemeMode;
+  toggleTheme: () => void;
+  setTheme: (mode: ThemeMode) => void;
+}
+
+// 主题状态管理
+export const useThemeStore = create<ThemeState>((set) => ({
+  themeMode: getInitialThemeMode(),
+  toggleTheme: () => set((state) => {
+    const newMode = state.themeMode === 'light' ? 'dark' : 'light';
+    localStorage.setItem('adminThemeMode', newMode);
+    return { themeMode: newMode };
+  }),
+  setTheme: (mode) => {
+    localStorage.setItem('adminThemeMode', mode);
+    set({ themeMode: mode });
+  },
+}));
diff --git a/frontend/src/theme/index.ts b/frontend/src/theme/index.ts
index 5a5b22d..ad51e0d 100644
--- a/frontend/src/theme/index.ts
+++ b/frontend/src/theme/index.ts
@@ -1,8 +1,9 @@
 // 全局主题配置
 import type { ThemeConfig } from 'antd';
+import type { ThemeMode } from '../stores/themeStore';
 
-// 自定义主题配置
-export const appTheme: ThemeConfig = {
+// 亮色主题配置
+export const lightTheme: ThemeConfig = {
   token: {
     // 主色调
     colorPrimary: '#1890ff',
@@ -22,18 +23,66 @@ export const appTheme: ThemeConfig = {
   components: {
     // Layout 组件主题
     Layout: {
-      headerBg: '#001529', // 顶部导航和侧边栏背景色
-      footerBg: '#001529', // 页脚背景色
-      siderBg: '#001529', // 侧边栏背景色
+      headerBg: '#ffffff', // 顶部导航背景色（亮色）
+      footerBg: '#ffffff', // 页脚背景色（亮色）
+      siderBg: '#ffffff', // 侧边栏背景色（亮色）
     },
     
     // Menu 组件主题
     Menu: {
-      darkItemSelectedBg: '#1890ff', // 菜单激活背景色
-      darkItemHoverBg: 'rgba(24, 144, 255, 0.2)', // 菜单悬停背景色
-      darkItemColor: 'rgba(255, 255, 255, 0.65)', // 菜单项文字颜色
-      darkItemSelectedColor: '#fff', // 菜单激活文字颜色
-      darkItemHoverColor: '#fff', // 菜单悬停文字颜色
+      itemSelectedBg: '#e6f7ff', // 菜单激活背景色（亮色）
+      itemHoverBg: 'rgba(24, 144, 255, 0.1)', // 菜单悬停背景色（亮色）
+      itemColor: 'rgba(0, 0, 0, 0.65)', // 菜单项文字颜色（亮色）
+      itemSelectedColor: '#1890ff', // 菜单激活文字颜色（亮色）
+      itemHoverColor: '#1890ff', // 菜单悬停文字颜色（亮色）
+      itemSelectedStyle: {
+        boxShadow: 'none', // 去除菜单激活项的阴影
+      },
     },
   },
 };
+
+// 暗色主题配置
+export const darkTheme: ThemeConfig = {
+  token: {
+    // 主色调
+    colorPrimary: '#1890ff',
+    colorSuccess: '#52c41a',
+    colorWarning: '#faad14',
+    colorError: '#ff4d4f',
+    colorInfo: '#1890ff',
+    
+    // 字体设置
+    fontFamily: '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif',
+    fontSize: 14,
+    
+    // 圆角
+    borderRadius: 3,
+  },
+  
+  components: {
+    // Layout 组件主题
+    Layout: {
+      headerBg: '#001529', // 顶部导航和侧边栏背景色（暗色）
+      footerBg: '#001529', // 页脚背景色（暗色）
+      siderBg: '#001529', // 侧边栏背景色（暗色）
+    },
+    
+    // Menu 组件主题
+    Menu: {
+      darkItemSelectedBg: '#1890ff', // 菜单激活背景色（暗色）
+      darkItemHoverBg: 'rgba(24, 144, 255, 0.2)', // 菜单悬停背景色（暗色）
+      darkItemColor: 'rgba(255, 255, 255, 0.65)', // 菜单项文字颜色（暗色）
+      darkItemSelectedColor: '#fff', // 菜单激活文字颜色（暗色）
+      darkItemHoverColor: '#fff', // 菜单悬停文字颜色（暗色）
+    },
+  },
+};
+
+// 根据主题模式获取主题配置
+export const getThemeByMode = (mode: ThemeMode): ThemeConfig => {
+  return mode === 'light' ? lightTheme : darkTheme;
+};
+
+// 默认主题配置（向后兼容）
+export const appTheme: ThemeConfig = darkTheme;