diff --git a/jituan/services/club_user.py b/jituan/services/club_user.py
index 9668b2b..c57ec92 100644
--- a/jituan/services/club_user.py
+++ b/jituan/services/club_user.py
@@ -13,23 +13,30 @@ def resolve_invite_party_club(user, request_club_id=None):
     if not user:
         return None
 
-    explicit = (getattr(user, 'ClubID', None) or '').strip()
-    if explicit:
-        return explicit
-
     uid = getattr(user, 'UserUID', None) or getattr(user, 'yonghuid', None)
-    if not uid:
-        return None
-
     req = (request_club_id or '').strip()
-    if req:
-        hit = UserWxOpenid.query.filter(yonghuid=uid, club_id=req).first()
-        if hit:
+
+    # 当前小程序 openid 绑定优先（ClubID 字段曾默认 xq，会误判新用户）
+    if req and uid:
+        if UserWxOpenid.query.filter(yonghuid=uid, club_id=req).exists():
             return req
 
-    binding = UserWxOpenid.query.filter(yonghuid=uid).order_by('id').first()
-    if binding:
-        return binding.club_id
+    explicit = (getattr(user, 'ClubID', None) or '').strip()
+    if explicit:
+        if explicit == CLUB_ID_DEFAULT and uid:
+            has_real_xq = (
+                UserWxOpenid.query.filter(yonghuid=uid, club_id=CLUB_ID_DEFAULT).exists()
+                or bool(getattr(user, 'OpenID', None))
+            )
+            if not has_real_xq:
+                explicit = ''
+        if explicit:
+            return explicit
+
+    if uid:
+        binding = UserWxOpenid.query.filter(yonghuid=uid).order_by('id').first()
+        if binding:
+            return binding.club_id
 
     return None
 
diff --git a/jituan/services/wechat_login.py b/jituan/services/wechat_login.py
index 81d4713..c3cfe2b 100644
--- a/jituan/services/wechat_login.py
+++ b/jituan/services/wechat_login.py
@@ -151,6 +151,7 @@ def login_or_register_by_club(code, club_id=None, app_id=None, client_ip=''):
                 UserName=openid,
                 OpenID=openid if resolved_club_id == CLUB_ID_DEFAULT else None,
                 UnionID=unionid or None,
+                ClubID='',
             )
             try:
                 from django.db import IntegrityError
diff --git a/users/business_models.py b/users/business_models.py
index 836ab64..ca81233 100644
--- a/users/business_models.py
+++ b/users/business_models.py
@@ -44,7 +44,7 @@ class User(_UserBase):
     IsStaff = models.BooleanField(default=False, db_column='IsStaff', verbose_name='是否员工')
     IsSuperuser = models.BooleanField(default=False, db_column='IsSuperuser', verbose_name='是否超级用户')
     ClubID = models.CharField(
-        max_length=16, default='xq', db_column='ClubID', verbose_name='所属俱乐部',
+        max_length=16, default='', db_column='ClubID', verbose_name='所属俱乐部',
         null=True, blank=True,
     )
 
diff --git a/users/views/auth.py b/users/views/auth.py
index 112c1ec..83b2cff 100644
--- a/users/views/auth.py
+++ b/users/views/auth.py
@@ -860,6 +860,7 @@ class WechatLoginAndDashouRegisterView(APIView):
                             UserName=openid,
                             OpenID=openid if club_id == CLUB_ID_DEFAULT else None,
                             UnionID=unionid or None,
+                            ClubID='',  # 勿用模型历史默认 xq，注册成功后再写
                         )
                         user_main.save()
                         created = True
@@ -889,14 +890,18 @@ class WechatLoginAndDashouRegisterView(APIView):
 
                 from jituan.services.invite_guard import assert_invite_same_club
                 from jituan.services.club_resolver import resolve_club_id_for_wechat_request
+                from jituan.services.club_user import resolve_invite_party_club
 
                 ok, invite_msg = assert_invite_same_club(
                     request, guanshi_profile.user, user_main,
                 )
                 if not ok:
                     logger.warning(
-                        'wdlyhdl 俱乐部校验失败 uid=%s club=%s msg=%s invite=%s',
-                        user_main.UserUID, club_id, invite_msg, yaoqingma[:8],
+                        'wdlyhdl 俱乐部校验失败 uid=%s club=%s invitee_club=%s inviter_club=%s msg=%s invite=%s',
+                        user_main.UserUID, club_id,
+                        resolve_invite_party_club(user_main, club_id),
+                        resolve_invite_party_club(guanshi_profile.user, club_id),
+                        invite_msg, yaoqingma[:8],
                     )
                     return legacy_miniapp_error(403, invite_msg)