diff --git a/src/renderer/plugins/markdown-luckysheet.ts b/src/renderer/plugins/markdown-luckysheet.ts
index c652b8fb..8bc92aa0 100644
--- a/src/renderer/plugins/markdown-luckysheet.ts
+++ b/src/renderer/plugins/markdown-luckysheet.ts
@@ -119,8 +119,8 @@ function buildSrcdoc (repo: string, path: string, full: boolean) {
       }
     </style>
     <div id="lucky-sheet" style="height: 100%"></div>
-    <script defer src="/luckysheet/plugins/js/plugin.js"></script>
-    <script defer src="/luckysheet/luckysheet.umd.js"></script>
+    <script src="/luckysheet/plugins/js/plugin.js"></script>
+    <script src="/luckysheet/luckysheet.umd.js"></script>
     <script>
       async function fetchHttp (input, init) {
         const response = await fetch(input, init)
diff --git a/src/renderer/support/demo.ts b/src/renderer/support/demo.ts
index 0477aadf..8dd2b356 100644
--- a/src/renderer/support/demo.ts
+++ b/src/renderer/support/demo.ts
@@ -8,6 +8,7 @@ if (FLAG_DEMO) {
   setTheme('dark')
 
   const xFetch = window.fetch
+  const xOpen = window.open
   const cache: {[key: string]: string} = {}
 
   window.addEventListener('click', e => {
@@ -65,13 +66,65 @@ if (FLAG_DEMO) {
       }
 
       if (uri.startsWith('/api/tree')) {
-        return Promise.resolve({ status: 'ok', message: '获取成功', data: [{ name: '/', type: 'dir', path: '/', repo: 'test', children: [{ name: '工作', path: '工作', type: 'dir', repo: 'test', children: [{ name: '1.md', path: '工作/1.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635402958.447, mtime: 1623635402958.447 }, { name: '2.md', path: '工作/2.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635406528.4639, mtime: 1623635406528.4639 }, { name: '3.md', path: '工作/3.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635410176.051, mtime: 1623635410177.0498 }] }, { name: '学习', path: '学习', type: 'dir', repo: 'test', children: [{ name: 'a.md', path: '学习/a.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635423871.2678, mtime: 1623635423871.2678 }, { name: 'b.md', path: '学习/b.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635427472.3079, mtime: 1623635427472.3079 }, { name: 'c.md', path: '学习/c.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635431935.041, mtime: 1623635431935.041 }] }, { name: 'TEST.md', path: 'TEST.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635389096.3315, mtime: 1623635389097.3403 }, { name: 'TODO.md', path: 'TODO.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635437968.1262, mtime: 1623635437969.1235 }, { name: '重要账号.c.md', path: '重要账号.c.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635542753.2976, mtime: 1623635542753.2976 }] }] })
+        return Promise.resolve({ status: 'ok', message: '获取成功', data: [{ name: '/', type: 'dir', path: '/', repo: 'test', children: [{ name: '工作', path: '工作', type: 'dir', repo: 'test', children: [{ name: '1.md', path: '工作/1.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635402958.447, mtime: 1623635402958.447 }, { name: '2.md', path: '工作/2.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635406528.4639, mtime: 1623635406528.4639 }, { name: '3.md', path: '工作/3.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635410176.051, mtime: 1623635410177.0498 }] }, { name: '学习', path: '学习', type: 'dir', repo: 'test', children: [{ name: 'a.md', path: '学习/a.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635423871.2678, mtime: 1623635423871.2678 }, { name: 'b.md', path: '学习/b.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635427472.3079, mtime: 1623635427472.3079 }, { name: 'c.md', path: '学习/c.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635431935.041, mtime: 1623635431935.041 }] }, { name: 'TEST.md', path: 'TEST.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635389096.3315, mtime: 1623635389097.3403 }, { name: 'TODO.md', path: 'TODO.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635437968.1262, mtime: 1623635437969.1235 }, { name: '重要账号.c.md', path: '重要账号.c.md', type: 'file', repo: 'test', marked: false, birthtime: 1623635542753.2976, mtime: 1623635542753.2976 }, { name: '表格.luckysheet', path: '表格.luckysheet', type: 'file', repo: 'test', marked: false, birthtime: 1623635542753.2976, mtime: 1623635542753.2976 }] }] })
       }
 
       if (uri.startsWith('/api/help') || uri.startsWith('/api/file')) {
         if (method === 'POST') {
           return Promise.resolve({ status: 'ok', message: '保存成功' })
         } else if (method === 'GET') {
+          if ((url.searchParams.get('path') || '').endsWith('.luckysheet')) {
+            const content = JSON.stringify([{
+              name: 'Sheet1',
+              color: '',
+              status: 1,
+              order: 0,
+              data: Array(20).fill(Array(14).fill(null)),
+              config: {
+                merge: {},
+                rowlen: {},
+                rowhidden: {}
+              },
+              index: 0,
+              jfgird_select_save: [],
+              luckysheet_select_save: [{
+                row: [0, 0],
+                column: [0, 0],
+                row_focus: 0,
+                column_focus: 0,
+                left: 0,
+                width: 73,
+                top: 0,
+                height: 19,
+                left_move: 0,
+                width_move: 73,
+                top_move: 0,
+                height_move: 19
+              }],
+              visibledatarow: [],
+              visibledatacolumn: [],
+              ch_width: 4560,
+              rh_height: 1760,
+              luckysheet_selection_range: [],
+              zoomRatio: 1,
+              scrollLeft: 0,
+              scrollTop: 0,
+              calcChain: [],
+              filter_select: null,
+              filter: null,
+              luckysheet_conditionformat_save: [],
+              luckysheet_alternateformat_save: [],
+              dataVerification: {},
+              hyperlink: {},
+              celldata: []
+            }])
+            return Promise.resolve({
+              status: 'ok',
+              message: '获取成功',
+              data: { content, hash: 'test' }
+            })
+          }
+
           const path = '/' + (url.searchParams.get('doc') || 'FEATURES.md')
           const data = {
             status: 'ok',
@@ -103,4 +156,10 @@ if (FLAG_DEMO) {
       return Promise.resolve({ status: 'error', message })
     }
   } as any)
+
+  window.open = function (...args: any[]) {
+    const win = xOpen(...args)
+    win!.fetch = window.fetch
+    return win
+  }
 }