diff --git a/backend/src/index.js b/backend/src/index.js
index cfef857..6047f91 100644
--- a/backend/src/index.js
+++ b/backend/src/index.js
@@ -12,12 +12,14 @@ const trashRoutes = require('./routes/trash');
 const statsRoutes = require('./routes/stats');
 const recentRoutes = require('./routes/recent');
 const errorHandler = require('./middleware/errorHandler');
+const logger = require('./middleware/logger');
 
 const app = express();
 const PORT = process.env.PORT || 3000;
 
 app.use(cors());
 app.use(express.json());
+app.use(logger);
 
 app.use('/api/auth', authRoutes);
 app.use('/api/files', fileRoutes);
diff --git a/backend/src/middleware/logger.js b/backend/src/middleware/logger.js
new file mode 100644
index 0000000..05b8560
--- /dev/null
+++ b/backend/src/middleware/logger.js
@@ -0,0 +1,28 @@
+// 请求日志中间件
+const logger = (req, res, next) => {
+  const start = Date.now();
+  
+  res.on('finish', () => {
+    const duration = Date.now() - start;
+    const log = {
+      method: req.method,
+      url: req.url,
+      status: res.statusCode,
+      duration: `${duration}ms`,
+      ip: req.ip,
+      userAgent: req.get('user-agent'),
+      timestamp: new Date().toISOString()
+    };
+    
+    // 控制台输出
+    if (log.status >= 400) {
+      console.error('[ERROR]', JSON.stringify(log));
+    } else {
+      console.log('[INFO]', JSON.stringify(log));
+    }
+  });
+  
+  next();
+};
+
+module.exports = logger;