diff --git a/app.py b/app.py
index 701b727..7a0eb02 100644
--- a/app.py
+++ b/app.py
@@ -17,6 +17,7 @@ import hashlib
 import jwt
 import datetime
 import logging
+from logging.handlers import RotatingFileHandler
 from crypto_utils import CryptoUtils, set_crypto_keys, derive_key_from_credentials
 
 def get_client_ip():
@@ -800,7 +801,7 @@ def get_access_logs():
 def cleanup_logs():
     """清理旧日志"""
     db.cleanup_old_logs()
-    return jsonify({'message': '已清理7天前的日志'})
+    return jsonify({'message': '已清理3天前的访问日志和命令日志'})
 
 def create_required_directories():
     """创建必要的目录"""
@@ -1008,10 +1009,18 @@ def execute_playbook():
 if __name__ == '__main__':
     create_required_directories()
 
-    logging.basicConfig(
-        filename='logs/app.log',
-        level=logging.INFO,
-        format='%(asctime)s %(levelname)s: %(message)s [in %(pathname)s:%(lineno)d]'
+    file_handler = RotatingFileHandler(
+        'logs/app.log',
+        maxBytes=1_048_576,
+        backupCount=3,
     )
+    file_handler.setFormatter(logging.Formatter(
+        '%(asctime)s %(levelname)s: %(message)s [in %(pathname)s:%(lineno)d]'
+    ))
+
+    root_logger = logging.getLogger()
+    root_logger.setLevel(logging.INFO)
+    root_logger.handlers.clear()
+    root_logger.addHandler(file_handler)
     
     app.run(host='0.0.0.0', port=5000)
diff --git a/database.py b/database.py
index 80b98ba..b764a59 100644
--- a/database.py
+++ b/database.py
@@ -248,9 +248,13 @@ class Database:
             return [dict(row) for row in cursor.fetchall()]
 
     def cleanup_old_logs(self):
-        """清理7天前的日志（使用北京时间）"""
+        """清理3天前的访问日志和命令日志（使用北京时间）"""
         with self.get_connection() as conn:
             conn.execute("""
                 DELETE FROM access_logs 
-                WHERE access_time < datetime('now', '+8 hours', '-7 days')
+                WHERE access_time < datetime('now', '+8 hours', '-3 days')
+            """)
+            conn.execute("""
+                DELETE FROM command_logs
+                WHERE datetime(executed_at, '+8 hours') < datetime('now', '+8 hours', '-3 days')
             """)
diff --git a/web/src/pages/MainPage.tsx b/web/src/pages/MainPage.tsx
index 8130a2b..e4586b5 100644
--- a/web/src/pages/MainPage.tsx
+++ b/web/src/pages/MainPage.tsx
@@ -318,7 +318,7 @@ function MainPage() {
   };
 
   const handleCleanupAccessLogs = async () => {
-    if (!confirm('确定要清理7天前的访问日志吗？')) return;
+    if (!confirm('确定要清理3天前的访问日志和命令日志吗？')) return;
     try {
       const response = await api.post('/api/access-logs/cleanup');
       toast.success("成功", { description: response.data.message });
@@ -420,7 +420,7 @@ function MainPage() {
                 </div>
               </div>
               <SheetFooter>
-                <Button variant="outline" onClick={handleCleanupAccessLogs} className="text-black dark:text-white">清理7天前日志</Button>
+                <Button variant="outline" onClick={handleCleanupAccessLogs} className="text-black dark:text-white">清理3天前日志</Button>
                 <SheetClose asChild>
                   <Button variant="outline">关闭</Button>
                 </SheetClose>