diff --git a/src/pages/SignUpPage/SignUpLayout.tsx b/src/pages/SignUpPage/SignUpLayout.tsx
index 9590790..6027733 100644
--- a/src/pages/SignUpPage/SignUpLayout.tsx
+++ b/src/pages/SignUpPage/SignUpLayout.tsx
@@ -2,27 +2,24 @@ import Header from '@/components/common/Header/Header';
 import ProgressBar from '@/components/SignUp/ProgressBar';
 import { Outlet, useLocation } from 'react-router-dom';
 
+const stepPaths = [
+  '/signup/birthday-gender',
+  '/signup/phone-number',
+  '/signup/mbti',
+  '/signup/nickname',
+  '/signup/student-id',
+  '/signup/profile-image',
+];
+
 const SignupLayout: React.FC = () => {
   const location = useLocation();
 
-  const stepPaths = [
-    '/signup/birthday-gender',
-    '/signup/phone-number',
-    '/signup/mbti',
-    '/signup/nickname',
-    '/signup/student-id',
-    '/signup/profile-image',
-  ];
-
   const currentStepIndex = stepPaths.indexOf(location.pathname);
   const progress = ((currentStepIndex + 1) / stepPaths.length) * 100;
 
   return (
     <div>
-      <Header
-        showBackButton={currentStepIndex > 0}
-        onBackClick={() => window.history.back()}
-      />
+      <Header showBackButton={true} onBackClick={() => window.history.back()} />
 
       <ProgressBar progress={progress} />
 
diff --git a/src/routes/route.tsx b/src/routes/route.tsx
index 048f6d5..13ce27f 100644
--- a/src/routes/route.tsx
+++ b/src/routes/route.tsx
@@ -1,4 +1,4 @@
-import { createBrowserRouter } from 'react-router-dom';
+import { createBrowserRouter, Navigate } from 'react-router-dom';
 import Home from '@/pages/Home';
 import Intro from '@/pages/SignUpPage/Intro';
 import PolicyDetails from '@/pages/SignUpPage/PolicyDetails';
@@ -19,30 +19,13 @@ const router = createBrowserRouter([
     path: '/signup',
     element: <SignupLayout />,
     children: [
-      {
-        path: 'birthday-gender',
-        element: <BirthdayGenderStep />,
-      },
-      {
-        path: 'phone-number',
-        element: <PhoneNumStep />,
-      },
-      {
-        path: 'mbti',
-        element: <MbtiStep />,
-      },
-      {
-        path: 'nickname',
-        element: <NicknameStep />,
-      },
-      {
-        path: 'student-id',
-        element: <StudentIdStep />,
-      },
-      {
-        path: 'profile-img',
-        element: <ProfileImgStep />,
-      },
+      { index: true, element: <Navigate to="/signup/birthday-gender" /> },
+      { path: 'birthday-gender', element: <BirthdayGenderStep /> },
+      { path: 'phone-number', element: <PhoneNumStep /> },
+      { path: 'mbti', element: <MbtiStep /> },
+      { path: 'nickname', element: <NicknameStep /> },
+      { path: 'student-id', element: <StudentIdStep /> },
+      { path: 'profile-img', element: <ProfileImgStep /> },
     ],
   },
   {