diff --git a/yuthon_wechat/models/res_users.py b/yuthon_wechat/models/res_users.py
index 268d113f6..686778a6d 100644
--- a/yuthon_wechat/models/res_users.py
+++ b/yuthon_wechat/models/res_users.py
@@ -94,13 +94,15 @@ class ResUsers(models.Model):
             raise OAuthLogin("请正确设置微信登录验证的corpid agentid corpsecret！" )
         corpid = client_ids[0]
         corpsecret = client_ids[2]
-        access_token = provider.scope
+        # 从 ir.config_parameter 缓存 access_token，避免写入 provider 记录触发 registry 重载
+        ICP = self.env['ir.config_parameter'].sudo()
+        access_token = ICP.get_param('wechat.access_token', default='')
         code = params.get('code', False)
         if not access_token:
             access_token = gettoken(provider.validation_endpoint, corpid, corpsecret)
+            ICP.set_param('wechat.access_token', access_token)
         if not code:
             raise OAuthLogin("微信扫码错误：没有 code！" )
-        provider.scope = access_token
 
         oauth_uid = False
         headers={'Content-Type': 'application/json'}
@@ -109,6 +111,9 @@ class ResUsers(models.Model):
         dict_user = response.json()
         errcode = dict_user.get("errcode", 0)
         if errcode in [42001]:
+            access_token = gettoken(provider.validation_endpoint, corpid, corpsecret)
+            ICP.set_param('wechat.access_token', access_token)
+            user_url = "%s?access_token=%s&code=%s" % (provider.data_endpoint, access_token, code)
             response = requests.get(user_url, headers=headers)
             dict_user = response.json()
 
@@ -118,7 +123,7 @@ class ResUsers(models.Model):
             oauth_uid = dict_user["UserId"]
         elif dict_user["errcode"] == 40014 or dict_user["errcode"] == 42001:  # 40014: 不合法的access_token,  42001: access_token expired
             access_token = gettoken(provider.validation_endpoint, corpid, corpsecret)
-            provider.scope = access_token
+            ICP.set_param('wechat.access_token', access_token)
             user_url = "%s?access_token=%s&code=%s" % (provider.data_endpoint, access_token, code)
             response = requests.get(user_url, headers = headers)
             dict_user = response.json()