diff --git a/app/chat/controller/GroupController.php b/app/chat/controller/GroupController.php
index e128de9..70d7466 100644
--- a/app/chat/controller/GroupController.php
+++ b/app/chat/controller/GroupController.php
@@ -217,6 +217,7 @@ class GroupController extends ApiController
             }
             Db::commit();
             if($res) {
+                Redis::del('usermsg:list:' . $this->user_type . ':' . $this->uid);
                 return $this->success();
             }else {
                 return $this->error();
diff --git a/app/chat/model/ChatGroup.php b/app/chat/model/ChatGroup.php
index efb2cd0..08718e1 100644
--- a/app/chat/model/ChatGroup.php
+++ b/app/chat/model/ChatGroup.php
@@ -4,6 +4,7 @@ namespace app\chat\model;
 
 use ba\Random;
 use support\Log;
+use support\Redis;
 use support\think\Db;
 
 class ChatGroup extends BaseModel
@@ -60,6 +61,7 @@ class ChatGroup extends BaseModel
                 'join_time' => $now,
             ]);
             $user = Db::name('chat_user')->where(['user_id' => $shop_id])->find();
+            Redis::del('usermsg:list:' . 2 . ':' . $shop_id);
             if(!$user) {
                 $res = Db::name('chat_user')->insert([
                     'user_id' => $shop_id,