diff --git a/src/components/Header.vue b/src/components/Header.vue
index 34d2fbf..f5bb278 100644
--- a/src/components/Header.vue
+++ b/src/components/Header.vue
@@ -149,7 +149,7 @@
 
   </header>
 
-  <div class="edu-nav-box">
+  <div class="edu-nav-box" v-if="isPc">
     <div class="mainbox">
       <div class="edu-head">
         <router-link class="logo" to="/"><img src="@/assets/logo.png" /></router-link>
@@ -359,6 +359,7 @@
     setup() {
       const { proxy } = getCurrentInstance();
       const state = reactive({
+        isPc: document.body.clientWidth > 1200,
         allMenu: [],
         leftMenu: [],
         rightMenu: [],