diff --git a/backend/server.js b/backend/server.js
index 3544b96..947a0bd 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -17,32 +17,30 @@ const HTML_PATH = path.join(PUBLIC_DIR, 'index.html');
 
 let cachedHtml = null;
 let htmlTimestamp = 0;
-let cachedSiteName = 'MC举报系统';
 
-function getSiteName() { return cachedSiteName; }
-
-async function refreshSiteName() {
-  if (!isInstalled()) return;
+function getSiteName() {
+  if (!isInstalled()) return 'MC举报系统';
   try {
     const { getPool } = require('./db');
-    const p = await getPool();
-    const [rows] = await p.execute("SELECT v FROM settings WHERE k='site_name'");
-    if (rows.length > 0) cachedSiteName = rows[0].v;
-  } catch {}
+    return getPool().then(p => p.execute("SELECT v FROM settings WHERE k='site_name'")).then(([rows]) => rows.length > 0 ? rows[0].v : 'MC举报系统').catch(() => 'MC举报系统');
+  } catch { return 'MC举报系统'; }
 }
 
 function getHtmlWithKey() {
-  const stat = fs.statSync(HTML_PATH);
-  const mtime = stat.mtimeMs;
-  if (cachedHtml && htmlTimestamp >= mtime) return cachedHtml;
-  let html = fs.readFileSync(HTML_PATH, 'utf-8');
-  const cfg = getConfig();
-  const key = cfg?.api_key || '';
-  const redirect = isInstalled() ? '' : '<script>location.hash="#/install"</script>';
-  html = html.replace('</head>', `<script>window.__API_KEY__=${JSON.stringify(key)};window.__SITE_NAME__=${JSON.stringify(cachedSiteName)}</script>${redirect}</head>`);
-  cachedHtml = html;
-  htmlTimestamp = mtime;
-  return html;
+  return getSiteName().then(siteName => {
+    const stat = fs.statSync(HTML_PATH);
+    const mtime = stat.mtimeMs;
+    if (!cachedHtml || htmlTimestamp < mtime || cachedHtml.indexOf(siteName) === -1) {
+      let html = fs.readFileSync(HTML_PATH, 'utf-8');
+      const cfg = getConfig();
+      const key = cfg?.api_key || '';
+      const redirect = isInstalled() ? '' : '<script>location.hash="#/install"</script>';
+      html = html.replace('</head>', `<script>window.__API_KEY__=${JSON.stringify(key)};window.__SITE_NAME__=${JSON.stringify(siteName)}</script>${redirect}</head>`);
+      cachedHtml = html;
+      htmlTimestamp = mtime;
+    }
+    return cachedHtml;
+  });
 }
 
 app.use(helmet({
@@ -127,15 +125,15 @@ if (isInstalled()) {
 
 app.get('/api/health', (req, res) => res.json({ status: 'ok', installed: isInstalled() }));
 
-app.get('/', (req, res) => {
+app.get('/', async (req, res) => {
   res.setHeader('Cache-Control', 'no-cache');
-  res.type('html').send(getHtmlWithKey());
+  res.type('html').send(await getHtmlWithKey());
 });
 
-app.get('*', (req, res) => {
+app.get('*', async (req, res) => {
   if (req.path.startsWith('/api')) return res.status(404).json({ error: '接口不存在' });
   res.setHeader('Cache-Control', 'no-cache');
-  res.type('html').send(getHtmlWithKey());
+  res.type('html').send(await getHtmlWithKey());
 });
 
 app.use((err, req, res, next) => {
@@ -148,6 +146,6 @@ app.use((err, req, res, next) => {
 });
 
 app.listen(PORT, () => {
-  if (isInstalled()) { refreshSiteName().then(() => console.log(`Server running at http://localhost:${PORT}`)); }
+  if (isInstalled()) console.log(`Server running at http://localhost:${PORT}`);
   else console.log(`System not installed. Visit http://localhost:${PORT}/#/install`);
 }).on('error', (err) => { console.error('Failed to start:', err.message); process.exit(1); });