diff --git a/backend/server.js b/backend/server.js
index f847852..8d47d63 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -1911,6 +1911,14 @@ app.post('/api/admin/users/:id/ban', authMiddleware, adminMiddleware, (req, res)
     const { id } = req.params;
     const { banned } = req.body;
 
+    // 防止管理员封禁自己
+    if (parseInt(id) === req.user.id && banned) {
+      return res.status(400).json({
+        success: false,
+        message: '不能封禁自己的账号'
+      });
+    }
+
     UserDB.setBanStatus(id, banned);
 
     res.json({