diff --git a/.github/workflows/cleanup-preview.yml b/.github/workflows/cleanup-preview.yml
new file mode 100644
index 00000000..00006e6f
--- /dev/null
+++ b/.github/workflows/cleanup-preview.yml
@@ -0,0 +1,36 @@
+name: Cleanup-Preview
+
+on:
+  pull_request:
+    types: [closed]
+    branches: ['develop']
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    environment: DEPLOY_PREVIEW
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_PREVIEW_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_PREVIEW_SECRET_ACCESS_KEY }}
+          aws-region: ap-northeast-2
+
+      - name: Delete Preview from S3
+        run: |
+          aws s3 rm s3://${{ secrets.AWS_PREVIEW_BUCKET_NAME }}/pr-${{ github.event.pull_request.number }}/ --recursive
+
+      - name: Comment Cleanup Notice
+        uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: '🧹 Preview 배포가 정리되었습니다.'
+            });
diff --git a/.github/workflows/deploy-preview.yml b/.github/workflows/deploy-preview.yml
new file mode 100644
index 00000000..086cc395
--- /dev/null
+++ b/.github/workflows/deploy-preview.yml
@@ -0,0 +1,100 @@
+name: Deploy-Preview
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches: ['develop']
+
+concurrency:
+  group: preview-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  deploy-preview:
+    runs-on: ubuntu-latest
+    environment: DEPLOY_PREVIEW
+    permissions:
+      pull-requests: write
+      contents: read
+
+    steps:
+      - name: Setup NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Setup .env
+        run: |
+          echo "${{ vars.ENV }}" > .env
+          echo "${{ secrets.ENV }}" >> .env
+          echo "VITE_BASE_PATH=/pr-${{ github.event.pull_request.number }}" >> .env
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Build Preview
+        run: npm run build
+
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_PREVIEW_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_PREVIEW_SECRET_ACCESS_KEY }}
+          aws-region: ap-northeast-2
+
+      - name: Deploy to S3 Preview Bucket
+        run: |
+          aws s3 sync ./dist s3://${{ secrets.AWS_PREVIEW_BUCKET_NAME }}/pr-${{ github.event.pull_request.number }}/ --delete
+
+      - name: Invalidate CloudFront Cache
+        run: |
+          aws cloudfront create-invalidation \
+            --distribution-id ${{ secrets.AWS_PREVIEW_CLOUDFRONT_ID }} \
+            --paths "/pr-${{ github.event.pull_request.number }}/*"
+
+      - name: Comment Preview URL on PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const prNumber = context.payload.pull_request.number;
+            const domain = '${{ vars.PREVIEW_DOMAIN }}';
+            const url = `https://${domain}/pr-${prNumber}/`;
+
+            const body = `## 🚀 Preview 배포 완료!
+
+            | 환경 | URL |
+            |-----|-----|
+            | Preview | [열기](${url}) |
+            | API | Dev 환경 |
+
+            > PR이 닫히면 자동으로 정리됩니다.`;
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: prNumber,
+            });
+
+            const existing = comments.find(c =>
+              c.user.login === 'github-actions[bot]' &&
+              c.body.includes('Preview 배포 완료')
+            );
+
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: prNumber,
+                body
+              });
+            }
diff --git a/src/routes/routes.tsx b/src/routes/routes.tsx
index e19ae4ee..d6c9a899 100644
--- a/src/routes/routes.tsx
+++ b/src/routes/routes.tsx
@@ -102,28 +102,33 @@ const protectedAppRoutes = appRoutes.map((route) => ({
   ),
 }));
 
-const router = createBrowserRouter([
+const router = createBrowserRouter(
+  [
+    {
+      element: (
+        <>
+          <ErrorBoundaryWrapper />
+          <BackActionHandler />
+        </>
+      ),
+      children: [
+        {
+          path: '/',
+          element: <LanguageWrapper />,
+          children: protectedAppRoutes, // 기본 언어(ko) 라우트
+        },
+        {
+          path: ':lang', // 다른 언어 라우트
+          element: <LanguageWrapper />,
+          children: protectedAppRoutes,
+        },
+      ],
+    },
+  ],
   {
-    element: (
-      <>
-        <ErrorBoundaryWrapper />
-        <BackActionHandler />
-      </>
-    ),
-    children: [
-      {
-        path: '/',
-        element: <LanguageWrapper />,
-        children: protectedAppRoutes, // 기본 언어(ko) 라우트
-      },
-      {
-        path: ':lang', // 다른 언어 라우트
-        element: <LanguageWrapper />,
-        children: protectedAppRoutes,
-      },
-    ],
+    basename: import.meta.env.VITE_BASE_PATH || '/',
   },
-]);
+);
 
 // 라우트 변경 시 Google Analytics 이벤트 전송
 router.subscribe(({ location }) => {