diff --git a/src/controller/User.php b/src/controller/User.php
index 0fbc5b7..4fc732c 100644
--- a/src/controller/User.php
+++ b/src/controller/User.php
@@ -101,7 +101,14 @@ class User extends Controller
             $user['contact_mail'] = $data['email'];
             // 处理上传的权限格式
             $user['authorize'] = arr2str($data['authorize'] ?? []);
-            SystemUser::mk()->save($user);
+            if (!empty($data['id'])) {
+                $systemUser = SystemUser::mk()->findOrEmpty($data['id']);
+                if ($systemUser->isExists()) {
+                    $systemUser->save($user);
+                }
+            } else {
+                SystemUser::mk()->save($user);
+            }
         }
     }