diff --git a/app/enterprise/controller/Group.php b/app/enterprise/controller/Group.php
index bf597d4..a47b70d 100644
--- a/app/enterprise/controller/Group.php
+++ b/app/enterprise/controller/Group.php
@@ -96,7 +96,9 @@ class Group extends BaseController
       if($role>2 && $setting['manage'] > 0){
          return warning(lang('group.notAuth'));
       }
-      GroupModel::where(['group_id' => $group_id])->update(['name' => $param['displayName'],'name_py'=>pinyin_sentence($param['displayName'])]);
+      $name_py = pinyin_sentence($param['displayName']);
+      if (strlen($name_py) > 64) return warning(lang('system.fail'));
+      GroupModel::where(['group_id' => $group_id])->update(['name' => $param['displayName'],'name_py'=>$name_py]);
       $param['editUserName'] = $this->userInfo['realname'];
       $action='editGroupName';
       event('GroupChange', ['action' => $action, 'group_id' => $group_id, 'param' => $param]);