diff --git a/backend/app/controller/AuthController.php b/backend/app/controller/AuthController.php
index 86b94a6..0b52ca0 100644
--- a/backend/app/controller/AuthController.php
+++ b/backend/app/controller/AuthController.php
@@ -140,10 +140,10 @@ class AuthController extends BaseController
                 'expires_at' => date('Y-m-d H:i:s', time() + 300), // 5分钟过期
             ]);
 
-            // 构建扫码登录 URL
+            // 构建扫码登录 URL（使用官方 passport 端点）
             $appId = 'cli_a8033d607cba500d';
             $redirectUri = urlencode("https://xsm.dev.hnxinyouhe.com/login/qrcode/{$loginSession->id}");
-            $authUrl = "https://open.feishu.cn/open-apis/authen/v1/oidc/authorize?app_id={$appId}&redirect_uri={$redirectUri}&state={$loginSession->id}";
+            $authUrl = "https://passport.feishu.cn/suite/passport/oauth/authorize?client_id={$appId}&redirect_uri={$redirectUri}&response_type=code&state={$loginSession->id}";
 
             // 生成二维码内容（返回 URL，前端生成二维码）
             return $this->success([
diff --git a/backend/app/service/FeishuService.php b/backend/app/service/FeishuService.php
index 43927c4..b4cc0b8 100644
--- a/backend/app/service/FeishuService.php
+++ b/backend/app/service/FeishuService.php
@@ -134,28 +134,36 @@ class FeishuService
     }
 
     /**
-     * 根据 auth_code 获取用户信息
+     * 根据 auth_code 获取用户信息（扫码登录）
      */
     public function getUserInfo(string $authCode): array
     {
         $app = $this->getAppConfig();
-        $token = $this->getAccessToken();
 
-        // 获取用户 access_token
-        $response = $this->httpPost('https://open.feishu.cn/open-apis/authen/v1/oidc/access_token', [
+        // 使用 passport 端点获取 user_access_token
+        $response = $this->httpPost('https://passport.feishu.cn/suite/passport/oauth/token', [
             'grant_type' => 'authorization_code',
             'client_id' => $app['app_id'],
             'client_secret' => $app['app_secret'],
             'code' => $authCode,
-        ], [
-            'Authorization: Bearer ' . $token,
         ]);
 
-        if ($response['code'] !== 0) {
-            throw new \Exception('获取用户信息失败: ' . ($response['msg'] ?? '未知错误'));
+        if (!isset($response['access_token'])) {
+            throw new \Exception('获取 user_access_token 失败: ' . ($response['error_description'] ?? '未知错误'));
         }
 
-        return $response['data'] ?? [];
+        $userAccessToken = $response['access_token'];
+
+        // 使用 user_access_token 获取用户信息
+        $userInfo = $this->httpGet('https://passport.feishu.cn/suite/passport/oauth/userinfo', [
+            'access_token' => $userAccessToken,
+        ]);
+
+        if (!isset($userInfo['data'])) {
+            throw new \Exception('获取用户信息失败');
+        }
+
+        return $userInfo['data'];
     }
 
     /**
@@ -306,4 +314,36 @@ class FeishuService
 
         return $result;
     }
+
+    /**
+     * HTTP GET 请求
+     */
+    private function httpGet(string $url, array $params = []): array
+    {
+        if (!empty($params)) {
+            $url .= '?' . http_build_query($params);
+        }
+
+        $ch = curl_init();
+
+        curl_setopt($ch, CURLOPT_URL, $url);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+
+        $response = curl_exec($ch);
+        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+        if ($httpCode !== 200) {
+            throw new \Exception("HTTP 请求失败: {$httpCode}");
+        }
+
+        $result = json_decode($response, true);
+
+        if (json_last_error() !== JSON_ERROR_NONE) {
+            throw new \Exception('JSON 解析失败');
+        }
+
+        return $result;
+    }
 }
diff --git a/frontend/src/pages/login/QRCodeLogin.tsx b/frontend/src/pages/login/QRCodeLogin.tsx
index a6f555e..ae33146 100644
--- a/frontend/src/pages/login/QRCodeLogin.tsx
+++ b/frontend/src/pages/login/QRCodeLogin.tsx
@@ -175,6 +175,10 @@ export default function QRCodeLogin({ visible, onClose }: QRCodeLoginProps) {
                   </button>
                 </div>
               )}
+
+              <p className={styles.tip}>
+                💡 打开飞书 APP，扫一扫登录
+              </p>
             </>
           )}
         </div>