diff --git a/extend/workermans/model/Base.php b/extend/workermans/model/Base.php
index 2f073ed..725827c 100644
--- a/extend/workermans/model/Base.php
+++ b/extend/workermans/model/Base.php
@@ -360,7 +360,7 @@ class Base extends Model
     {
         $table = Redis::get('time_discount:info');
         if($table) {
-            $table_arr = json_decode($table, true);
+            $table_arr = explode(',', $table);
             if(is_array($table_arr)) {
                 foreach ($table_arr as $k => $v) {
                     if(!Gateway::getClientCountByGroup(str_replace(':time_discount', '', $v))) {
diff --git a/plugin/webman/gateway/Events.php b/plugin/webman/gateway/Events.php
index deb943b..34fc7b4 100644
--- a/plugin/webman/gateway/Events.php
+++ b/plugin/webman/gateway/Events.php
@@ -134,11 +134,10 @@ class Events
                     // 将桌号存入redis 以便及时删除
                     $time_discount_info = Redis::get('time_discount:info');
                     if($time_discount_info) {
-                        $time_discount_info_arr = json_decode($time_discount_info, true);
-                        $time_discount_info_arr = array_merge($time_discount_info_arr, $redis_str);
-                        Redis::set('time_discount:info', json_encode($time_discount_info_arr));
+                        $time_discount_info .= $redis_str . ',';
+                        Redis::set('time_discount:info', $time_discount_info);
                     }else {
-                        Redis::set('time_discount:info', json_encode($redis_str));
+                        Redis::set('time_discount:info', $redis_str . ',');
                     }
                 }
                 $snd_data = [