diff --git a/.vitepress/theme/components/MirrorSite.vue b/.vitepress/theme/components/MirrorSite.vue
new file mode 100644
index 00000000..f4100b75
--- /dev/null
+++ b/.vitepress/theme/components/MirrorSite.vue
@@ -0,0 +1,127 @@
+<script setup lang="ts">
+import { onMounted, ref } from 'vue'
+
+const isVisible = ref(false)
+const nameStorage = 'GITEE-MIRROR-SITE'
+
+function switchToMirrorSite() {
+  window.location.href = location.href.replace(
+    'github.io',
+    'gitee.io',
+  )
+}
+
+function closeBanner() {
+  isVisible.value = false
+  localStorage.setItem(nameStorage, String(true))
+  document.documentElement.classList.remove('mirror-site-menu-fixed')
+}
+
+onMounted(() => {
+  isVisible.value = !localStorage.getItem(nameStorage) && location.href.includes('github.io')
+  if (isVisible.value)
+    document.documentElement.classList.add('mirror-site-menu-fixed')
+})
+</script>
+
+<template>
+  <div v-if="isVisible" class="banner-wrapper" role="banner">
+    <div id="banner" @click="switchToMirrorSite">
+      <div class="content">
+        官网打开很慢？点击访问国内镜像地址吧！
+      </div>
+      <button id="banner-close" @click.stop="closeBanner">
+        <span class="close">&times;</span>
+      </button>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.banner-wrapper {
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  z-index: 61;
+  width: 100%;
+  height: 100%;
+  max-height: 40px;
+  background: linear-gradient(45deg, #0a2b4e, #835ec2);
+  overflow: hidden;
+  margin: 0;
+  transition: background-size 0.25s cubic-bezier(0.39, 0.575, 0.565, 1);
+}
+
+#banner {
+  position: relative;
+  width: 100%;
+  height: 100%;
+  text-decoration: none;
+  color: white;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  overflow: hidden;
+  cursor: pointer;
+}
+
+#banner .content {
+  margin: 0;
+  padding: 0;
+  font-weight: bold;
+  font-size: 18px;
+  letter-spacing: 2px;
+  text-align: center;
+  background: linear-gradient(145deg, #c3ffac, #86ec87, #38a56a);
+  background-clip: text;
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+}
+
+#banner-close {
+  position: absolute;
+  right: 12px;
+  color: #fff;
+  font-size: 20px;
+  font-weight: bold;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+#banner-close > .close {
+  font-size: 20px;
+  font-weight: 600;
+}
+
+@media screen and (max-width: 767px) {
+  #banner .content {
+    font-size: 14px;
+  }
+}
+</style>
+
+<style>
+html.mirror-site-menu-fixed {
+  --vp-layout-top-height: 40px;
+}
+html.mirror-site-menu-fixed .VPNav,
+html.mirror-site-menu-fixed .VPSidebar {
+  top: 40px;
+}
+html.mirror-site-menu-fixed {
+  scroll-padding-top: 104px;
+  overflow: auto;
+}
+html.mirror-site-menu-fixed {
+  margin-top: 42px;
+}
+@media (max-width: 960px) {
+  html.mirror-site-menu-fixed .VPNav,
+  html.mirror-site-menu-fixed .VPSidebar {
+    top: 0;
+  }
+}
+</style>
diff --git a/.vitepress/theme/index.ts b/.vitepress/theme/index.ts
index 6f6a4383..574b644d 100644
--- a/.vitepress/theme/index.ts
+++ b/.vitepress/theme/index.ts
@@ -3,6 +3,7 @@ import Theme from 'vitepress/theme'
 import { useRoute } from 'vitepress'
 import './styles/var.css'
 import mediumZoom from 'medium-zoom'
+import MirrorSite from './components/MirrorSite.vue'
 import SponsorsAside from './components/SponsorsAside.vue'
 import HomePreview from './components/HomePreview.vue'
 import ZoomImg from './components/ZoomImg.vue'
@@ -11,6 +12,7 @@ export default {
   ...Theme,
   Layout() {
     return h(Theme.Layout, null, {
+      'layout-top': () => h(MirrorSite),
       'home-features-after': () => h(HomePreview),
       'aside-bottom': () => h(SponsorsAside),
     })