diff --git a/backend/application/api/controller/Message.php b/backend/application/api/controller/Message.php
index 9dd2169..406d00a 100644
--- a/backend/application/api/controller/Message.php
+++ b/backend/application/api/controller/Message.php
@@ -29,10 +29,14 @@ class Message extends Api
             }
             //总未读数（兼容旧字段）+ 分类未读数（前端tab角标用）
             $unreadCount = MessageService::where($where + ['is_read' => CommonService::STATUS_OFF])->count();
+            //where() 走的是 Query 对象，select() 返回普通数组而非 Collection，需兼容处理
             $unreadList = MessageService::where(['to_user_id' => $user_id, 'is_read' => CommonService::STATUS_OFF])
                 ->field('message_type, count(*) as total')
                 ->group('message_type')
-                ->select()->toArray();
+                ->select();
+            $unreadList = is_object($unreadList) && method_exists($unreadList, 'toArray')
+                ? $unreadList->toArray()
+                : (array)$unreadList;
             $unreadMap = [
                 MessageService::TYPE_SYSTEM => 0,
                 MessageService::TYPE_NOTICE => 0,