diff --git a/lib/wechat/lib/wechat/api.rb b/lib/wechat/lib/wechat/api.rb
index 79dd69889..e66a15c14 100644
--- a/lib/wechat/lib/wechat/api.rb
+++ b/lib/wechat/lib/wechat/api.rb
@@ -7,6 +7,7 @@ module Wechat
   class Api < ApiBase
     API_BASE = 'https://api.weixin.qq.com/cgi-bin/'
     OAUTH2_BASE = 'https://api.weixin.qq.com/sns/oauth2/'
+    OAUTH2_USERINFO = 'https://api.weixin.qq.com/sns'
 
     def initialize(appid, secret, token_file, timeout, skip_verify_ssl, jsapi_ticket_file)
       @client = Client.new(API_BASE, timeout, skip_verify_ssl)
@@ -127,7 +128,7 @@ module Wechat
           openid: openid,
           lang: "zh_CN"
       }
-      get 'userinfo', params: params, base: OAUTH2_BASE
+      get 'userinfo', params: params, base: OAUTH2_USERINFO
     end
   end
 end