diff --git a/apps/frontend/vite.config.ts b/apps/frontend/vite.config.ts
index 92c08b59..6b3fae78 100644
--- a/apps/frontend/vite.config.ts
+++ b/apps/frontend/vite.config.ts
@@ -17,6 +17,13 @@ export default defineConfig({
   server: {
     host: '0.0.0.0',
     port: 5173,
+    // 隧道/自定义域名访问 dev server 时需加入白名单，否则 Vite 会拦截 Host
+    allowedHosts: [
+      'localhost',
+      '127.0.0.1',
+      '221329.cc.cd',
+      '.cc.cd',
+    ],
     proxy: {
       '/api': {
         target: apiTarget,