diff --git a/app/controller/Task.php b/app/controller/Task.php
index fadbcfe..bf24269 100644
--- a/app/controller/Task.php
+++ b/app/controller/Task.php
@@ -275,7 +275,7 @@ class Task extends BaseController
                 return json($this->json_data);
             }
         }
-        $cache_name = md5($params);
+        $cache_name = md5(http_build_query($params));
         if (Cache::get($cache_name)) {
             $this->json_data['code'] = 0;
             $this->json_data['msg'] = '表单已提交，请勿重复操作';