diff --git a/controllers/userController.js b/controllers/userController.js
index c572976..8ee6cce 100644
--- a/controllers/userController.js
+++ b/controllers/userController.js
@@ -10,7 +10,7 @@ exports.getUserList = async (req, res) => {
     const { page = 1, pageSize = 10, username, roleId, status } = req.query;
 
     // 构建查询条件
-    const where = { isDeleted: 0 };
+    const where = { isDeleted: 0, isSuperAdmin: 0 };
     if (username) {
       where.username = { [Op.like]: `%${username}%` };
     }
diff --git a/utils/logger.js b/utils/logger.js
index d95e781..bf00a01 100644
--- a/utils/logger.js
+++ b/utils/logger.js
@@ -119,7 +119,7 @@ function operationLogMiddleware(options = {}) {
             query: req.query,
             params: req.params
           }),
-          result: res.responseData ? res.responseData.substring(0, 2000) : null,
+          result: res.responseData ? (typeof res.responseData === 'string' ? res.responseData.substring(0, 2000) : JSON.stringify(res.responseData).substring(0, 2000)) : null,
           status: res.statusCode >= 200 && res.statusCode < 300 ? 'success' : 'fail',
           duration: duration
         });