diff --git a/application/api/controller/Room.php b/application/api/controller/Room.php
index 2760907e..767a7e7f 100644
--- a/application/api/controller/Room.php
+++ b/application/api/controller/Room.php
@@ -140,7 +140,7 @@ class Room extends BaseCom
     public function join_room()
     {
         $room_id = input('room_id', 0);
-        $password = input('room_password', '');
+        $password = input('room_password');
 
         //检测系统是否维护中
         $is_maintenance = get_system_config_value('is_maintenance');