diff --git a/app/Service/v3/Implementations/WxLoginService.php b/app/Service/v3/Implementations/WxLoginService.php
index 032e788..4b9828d 100644
--- a/app/Service/v3/Implementations/WxLoginService.php
+++ b/app/Service/v3/Implementations/WxLoginService.php
@@ -31,7 +31,7 @@ class WxLoginService implements \App\Service\v3\Interfaces\WxLoginServiceInterfa
         // 更新或者插入用户数据
         $user = User::query()->firstOrCreate(
             ['openid' => $result['openid']],
-            ['unionid' => $result['unionid']]
+            ['unionid' => ($result['unionid'] ?? '')]
         )->toArray();
 
         // 登录成功