diff --git a/src/Work/Auth/Client.php b/src/Work/Auth/Client.php
new file mode 100644
index 000000000..4584eb8da
--- /dev/null
+++ b/src/Work/Auth/Client.php
@@ -0,0 +1,94 @@
+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace EasyWeChat\Work\Auth;
+
+use EasyWeChat\Kernel\BaseClient;
+
+/**
+ * Class Client.
+ *
+ * @author lujunyi <lujunyi@shopex.cn>
+ */
+class Client extends BaseClient
+{
+    /**
+     * 获取网页授权登录url，适用于自建应用与代开发应用。
+     *
+     * @see https://developer.work.weixin.qq.com/document/path/91022
+     *
+     * @param string $redirectUri
+     * @param string $scope
+     * @param string $agentId
+     * @param string|null $state
+     *
+     * @return string
+     * @throws \Exception
+     */
+    public function getOAuthRedirectUrl(string $redirectUri = '', string $scope = 'snsapi_privateinfo', string $agentId = '', string $state = null)
+    {
+        $redirectUri || $redirectUri = $this->app->config['redirect_uri_oauth'];
+        $state || $state = random_bytes(64);
+        $params = [
+            'appid' => $this->app['config']['suite_id'],
+            'redirect_uri' => $redirectUri,
+            'response_type' => 'code',
+            'scope' => $scope,
+            'state' => $state,
+            'agentid' => $agentId,
+        ];
+
+        return 'https://open.weixin.qq.com/connect/oauth2/authorize?' . http_build_query($params) . '#wechat_redirect';
+    }
+
+
+    /**
+     * 获取访问用户身份。根据code获取成员信息，适用于自建应用与代开发应用。
+     *
+     * @see https://developer.work.weixin.qq.com/document/path/91023
+     *
+     * @param string $code
+     *
+     * @return \Psr\Http\Message\ResponseInterface|\EasyWeChat\Kernel\Support\Collection|array|object|string
+     *
+     * @throws \EasyWeChat\Kernel\Exceptions\InvalidConfigException
+     * @throws \GuzzleHttp\Exception\GuzzleException
+     */
+    public function getUserByCode(string $code)
+    {
+        $params = [
+            'code' => $code,
+        ];
+
+        return $this->httpGet('cgi-bin/auth/getuserinfo', $params);
+    }
+
+    /**
+     * 获取访问用户敏感信息。自建应用与代开发应用可通过该接口获取成员授权的敏感字段。
+     *
+     * @see https://developer.work.weixin.qq.com/document/path/95833
+     *
+     * @param string $userTicket
+     *
+     * @return array|\EasyWeChat\Kernel\Support\Collection|object|\Psr\Http\Message\ResponseInterface|string
+     *
+     * @throws \EasyWeChat\Kernel\Exceptions\InvalidConfigException
+     * @throws \GuzzleHttp\Exception\GuzzleException
+     */
+    public function getUserByTicket(string $userTicket)
+    {
+        $params = [
+            'user_ticket' => $userTicket,
+        ];
+
+        return $this->httpPostJson('cgi-bin/auth/getuserdetail', $params);
+    }
+}
diff --git a/src/Work/Auth/ServiceProvider.php b/src/Work/Auth/ServiceProvider.php
index 5f0dba9db..7e0ee9528 100644
--- a/src/Work/Auth/ServiceProvider.php
+++ b/src/Work/Auth/ServiceProvider.php
@@ -29,5 +29,8 @@ public function register(Container $app)
         isset($app['access_token']) || $app['access_token'] = function ($app) {
             return new AccessToken($app);
         };
+        !isset($app['auth']) && $app['auth'] = function ($app) {
+            return new Client($app);
+        };
     }
 }