diff --git a/demo.html b/demo.html
index 2934127..c0ee9ad 100644
--- a/demo.html
+++ b/demo.html
@@ -18,18 +18,28 @@
     <div class="panel">
       <input id="urlInput" type="text" placeholder="输入同源文件URL" />
       <button id="loadBtn">设置 iframe 地址</button>
-      <small>仅拼接 iframe src：index.html?filePath=URL&mode=edit</small>
+      <small>仅拼接 iframe src：vocd.html?filePath=URL&mode=edit</small>
     </div>
-    <iframe id="editorFrame" src="./index.html" referrerpolicy="no-referrer"></iframe>
+    <iframe id="editorFrame" src="./vocd.html" referrerpolicy="no-referrer"></iframe>
 
     <script>
       const editorFrame = document.getElementById('editorFrame')
       const loadBtn = document.getElementById('loadBtn')
       const urlInput = document.getElementById('urlInput')
 
+      // 页面加载后，自动将 iframe 指向 vocd.html 并使用同源 /test.ocd
+      document.addEventListener('DOMContentLoaded', () => {
+        const defaultUrl = '/test.ocd' // 来自 public，同源可直接访问
+        urlInput.value = defaultUrl
+        const base = './vocd.html'
+        const src = `${base}?filePath=${encodeURIComponent(defaultUrl)}&mode=edit`
+        editorFrame.src = src
+        console.log('[demo] 自动设置 iframe src:', src)
+      })
+
       loadBtn.onclick = () => {
         const typedUrl = urlInput.value.trim()
-        const base = './index.html'
+        const base = './vocd.html'
         const src = typedUrl
           ? `${base}?filePath=${encodeURIComponent(typedUrl)}&mode=edit`
           : `${base}?mode=edit`
@@ -38,4 +48,4 @@
       }
     </script>
   </body>
-  </html>
\ No newline at end of file
+  </html>
diff --git a/vite.config.ts b/vite.config.ts
index 412df67..2277412 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -39,7 +39,7 @@ export default defineConfig(({ mode }) => {
   }
   return {
     base: './',
-    publicDir: false,
+    publicDir: 'public',
     build: {
       rollupOptions: {
         input: {
@@ -48,7 +48,8 @@ export default defineConfig(({ mode }) => {
       }
     },
     server: {
-      host: '0.0.0.0'
+      host: '0.0.0.0',
+      open: '/demo.html'
     }
   }
 })