diff --git a/package-lock.json b/package-lock.json
index 4ec6fbb..550feb3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
         "@testing-library/user-event": "^13.5.0",
         "axios": "^1.4.0",
         "hammerjs": "^2.0.8",
+        "jwt-decode": "^3.1.2",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-player": "^2.12.0",
@@ -11506,6 +11507,11 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/jwt-decode": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmmirror.com/jwt-decode/-/jwt-decode-3.1.2.tgz",
+      "integrity": "sha512-UfpWE/VZn0iP50d8cz9NrZLM9lSWhcJ+0Gt/nm4by88UL+J1SiKN8/5dkjMmbEzwL2CAe+67GsegCbIKtbp75A=="
+    },
     "node_modules/kind-of": {
       "version": "6.0.3",
       "resolved": "https://registry.npmmirror.com/kind-of/-/kind-of-6.0.3.tgz",
diff --git a/package.json b/package.json
index eb87ecc..90e98d8 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
     "@testing-library/user-event": "^13.5.0",
     "axios": "^1.4.0",
     "hammerjs": "^2.0.8",
+    "jwt-decode": "^3.1.2",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-player": "^2.12.0",
diff --git a/src/App.js b/src/App.js
index 07c68b2..d424c4d 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,20 +1,23 @@
-// App.js
-import React from 'react';
+import React, { useState, useEffect } from 'react';
 
 import AppBar from '@mui/material/AppBar';
+import Avatar from '@mui/material/Avatar';
+import Box from '@mui/material/Box';
 import IconButton from '@mui/material/IconButton';
 import Toolbar from '@mui/material/Toolbar';
 import Typography from '@mui/material/Typography';
+import ExitToAppIcon from '@mui/icons-material/ExitToApp';
 import { Route, Router, Routes } from 'react-router-dom';
 import ConfigContext, { config } from './Config';
 import LoginForm from './LoginForm';
 import Main from './Main';
-import VideoPlayer from './VideoPlayer'; // 导入我们将创建的VideoPlayer组件
+import VideoPlayer from './VideoPlayer';
 import { default as VuetifyLogo, default as VuetifyName } from './logo.svg';
 
 import axios from 'axios';
 import { useLocation, useNavigate } from 'react-router-dom';
- 
+import jwtDecode from 'jwt-decode';
+
 axios.interceptors.request.use((config) => {
   const token = localStorage.getItem('token');
   if (token) {
@@ -24,51 +27,69 @@ axios.interceptors.request.use((config) => {
 });
 
 const App = () => {
-  const navigate = useNavigate(); // 将 navigate 声明移动到组件内部
+  const navigate = useNavigate();
   const location = useLocation();
 
+  const [username, setUsername] = useState('');
+
+  useEffect(() => {
+    const token = localStorage.getItem('token');
+    if (token) {
+      const decodedToken = jwtDecode(token);
+      setUsername(decodedToken.username);
+    }
+  }, []);
+
   axios.interceptors.response.use(
- 
     (response) => {
       return response;
     },
-
     (error) => {
-      
-
       if (error.response.status === 401) {
-        sessionStorage.setItem('previousLocation', location.pathname); // 使用 window.location.pathname 获取当前路径
-        navigate('/login'); // 使用 window.location.assign() 进行导航
+        sessionStorage.setItem('previousLocation', location.pathname);
+        navigate('/login');
       }
       return Promise.reject(error);
     }
   );
 
+  const handleLogout = () => {
+    localStorage.removeItem('token');
+    setUsername('');
+    navigate('/login');
+  };
+
   return (
-
-
     <ConfigContext.Provider value={config}>
-      
-        <div>
-          <AppBar position="static">
-            <Toolbar>
+      <div>
+        <AppBar position="static">
+          <Toolbar>
+            <Box display="flex" alignItems="center" flexGrow={1}>
               <IconButton edge="start" color="inherit" aria-label="menu">
                 <img src={VuetifyLogo} alt="Vuetify Logo" width="40" />
               </IconButton>
-              <Typography variant="h3" style={{ flexGrow: 1 }}>
-                <img src={VuetifyName} alt="Vuetify Name" width="40" />
-              </Typography>
-            </Toolbar>
-          </AppBar>
-        </div>
-        <Routes>
-            <Route path="/login" element={<LoginForm />} />
-            <Route path="/" element={<Main />} />
-            <Route path="/res/:filename" element={<VideoPlayer />} />
-        </Routes>
-
+          
+            </Box>
+            {username && (
+              <Box display="flex" alignItems="center" marginRight="1rem">
+                <Avatar>{username.charAt(0).toUpperCase()}</Avatar>
+                <Typography variant="subtitle1" style={{ marginLeft: '1rem' }}>
+                  {username}
+                </Typography>
+              </Box>
+            )}
+            <IconButton edge="end" color="inherit" aria-label="logout" onClick={handleLogout}>
+              <ExitToAppIcon />
+            </IconButton>
+          </Toolbar>
+        </AppBar>
+      </div>
+      <Routes>
+        <Route path="/login" element={<LoginForm />} />
+        <Route path="/" element={<Main />} />
+        <Route path="/res/:filename" element={<VideoPlayer />} />
+      </Routes>
     </ConfigContext.Provider>
-
   );
 };