diff --git a/serve/frontend/src/pages/Auth.tsx b/serve/frontend/src/pages/Auth.tsx
index b43a6c0..4f31a1a 100644
--- a/serve/frontend/src/pages/Auth.tsx
+++ b/serve/frontend/src/pages/Auth.tsx
@@ -20,7 +20,7 @@ import { cn } from '@/lib/cn'
 
 export function Auth() {
   const navigate = useNavigate()
-  const [username, setUsername] = useState('admin')
+  const [username, setUsername] = useState('')
   const [password, setPassword] = useState('')
   const [confirmPassword, setConfirmPassword] = useState('')  // 仅设密码时用
   const [showPwd, setShowPwd] = useState(false)