diff --git a/extend/workermans/model/Base.php b/extend/workermans/model/Base.php
index 0b92946..218f87e 100644
--- a/extend/workermans/model/Base.php
+++ b/extend/workermans/model/Base.php
@@ -369,7 +369,7 @@ class Base extends Model
                         Redis::del($v);
                     }
                 }
-                Redis::set('time_discount:info', implode(',',$table_arr) . ',');
+                Redis::set('time_discount:info', implode(',', $table_arr));
             }
             if(empty($table_arr)){
                 print_r(json_encode($table_arr) . '过期' ."\r\n");
diff --git a/plugin/webman/gateway/Events.php b/plugin/webman/gateway/Events.php
index 34fc7b4..b63f284 100644
--- a/plugin/webman/gateway/Events.php
+++ b/plugin/webman/gateway/Events.php
@@ -126,18 +126,20 @@ class Events
             $redis_str = Base::get_shopping_save_uid($message['shop_id'], $message['table_code']) . ':time_discount';
             // 限时折扣修改
             if($message['operate_type'] == 'time_discount_save') {
-
                 if(empty($message['data'])) {
                     $res = Redis::del($redis_str);
                 }else {
                     $res = Redis::set($redis_str, json_encode($message['data']));
                     // 将桌号存入redis 以便及时删除
                     $time_discount_info = Redis::get('time_discount:info');
+                    $arr_time_discount_info = json_decode($time_discount_info, true);
                     if($time_discount_info) {
-                        $time_discount_info .= $redis_str . ',';
-                        Redis::set('time_discount:info', $time_discount_info);
+                        if(!in_array($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) . ',');
+                        }
                     }else {
-                        Redis::set('time_discount:info', $redis_str . ',');
+                        Redis::set('time_discount:info', $redis_str);
                     }
                 }
                 $snd_data = [