diff --git a/plugin/webman/gateway/Events.php b/plugin/webman/gateway/Events.php
index b056c19..6ae8e1b 100644
--- a/plugin/webman/gateway/Events.php
+++ b/plugin/webman/gateway/Events.php
@@ -136,7 +136,7 @@ class Events
                         $arr_time_discount_info = explode(',', $time_discount_info);
                         if(!in_array($redis_str, $arr_time_discount_info)) {
                             $time_discount_info = array_merge($arr_time_discount_info, [$redis_str]);
-                            Redis::set('time_discount:info', implode(',', $time_discount_info) . ',');
+                            Redis::set('time_discount:info', implode(',', $time_discount_info));
                         }
                     }else {
                         Redis::set('time_discount:info', $redis_str);