diff --git a/src/pages/auth/loading.vue b/src/pages/auth/loading.vue
index 199285d..e2f6182 100644
--- a/src/pages/auth/loading.vue
+++ b/src/pages/auth/loading.vue
@@ -97,10 +97,11 @@ export default {
           window.location.origin.replace(/^http:/, 'https:') + window.location.pathname
         );
 
-        // 使用 snsapi_base 静默授权，不弹窗
+        // 静默授权：微信用 snsapi_base，支付宝用 auth_base
+        const scopes = platform === 'alipay' ? 'auth_base' : 'snsapi_base';
         const res = await gatewayGet('/api/v1/user/auth/url', {
           app_no: appNo,
-          scopes: 'snsapi_base',
+          scopes: scopes,
           redirect_uri: redirectUri,
         });
 
@@ -256,9 +257,11 @@ export default {
           window.location.origin.replace(/^http:/, 'https:') + window.location.pathname
         );
 
+        // 用户信息授权：微信用 snsapi_userinfo，支付宝用 auth_user
+        const scopes = platform === 'alipay' ? 'auth_user' : 'snsapi_userinfo';
         const res = await gatewayGet('/api/v1/user/auth/url', {
           app_no: appNo,
-          scopes: 'snsapi_userinfo',
+          scopes: scopes,
           redirect_uri: redirectUri,
         });