diff --git a/app/controller/Help.php b/app/controller/Help.php
index cccfefb..f11058f 100644
--- a/app/controller/Help.php
+++ b/app/controller/Help.php
@@ -30,7 +30,7 @@ class Help
         $data['sha'] = sha1(json_encode($data));
 
         Db::startTrans();
-//        try {
+        try {
             $info = Db::name("app_help_log")->where("sha", $data['sha'])->find();
             if (!empty($info)) {
                 return show("你今天已经为他助力过，谢谢！");
@@ -49,15 +49,15 @@ class Help
                 Db::name("app_help")->where(["id" => $appHelp['id']])->inc("count", 1)->update();
             }
 
-            Db::name("student")->where(["id" => $info['id']])->inc("hot", 1)->update();
-            Db::name("student")->where(["id" => $info['id']])->inc("mhot_count", 1)->update();
+            Db::name("student")->where(["id" => $student_id])->inc("hot", 1)->update();
+            Db::name("student")->where(["id" => $student_id])->inc("mhot_count", 1)->update();
 
             Db::commit();
             return show("助力成功！", SUCCESS_CODE, []);
-//        }catch (\Exception $e) {
-//            Db::rollback();
-//            return show("助力失败！");
-//        }
+        }catch (\Exception $e) {
+            Db::rollback();
+            return show("助力失败！");
+        }
     }
 
     public function lists(){