diff --git a/src/components/PortalHeader.vue b/src/components/PortalHeader.vue
index c76d0593..b7f65272 100644
--- a/src/components/PortalHeader.vue
+++ b/src/components/PortalHeader.vue
@@ -218,17 +218,21 @@ export default {
       // });
     },
     handleCommand(val) {
-      let urlPre=window.location.protocol+'//'+window.location.host;
-      // process.env.VUE_APP_BOE_WEB_URL
-      let obj = {
-        one: urlPre+'/web/teacherLesson',
-        two: urlPre+'/grow180/login',
-        three: this.webBaseUrl + '/study/index?study=1',
-        four: 'https://m.qingxuetang.com/x/?appId=qxtcorp306130',
-        five: urlPre+'/boe/new-employee/index.html',
-        six: urlPre+'/web/contributor/index'
-      };
-      window.open(obj[val]);
+      if (val === "four") {
+          this.$emit('showClass',true)
+      } else {
+        let urlPre = window.location.protocol + "//" + window.location.host;
+        // process.env.VUE_APP_BOE_WEB_URL
+        let obj = {
+          one: urlPre + "/web/teacherLesson",
+          two: urlPre + "/grow180/login",
+          three: this.webBaseUrl + "/study/index?study=1",
+          // four: 'https://m.qingxuetang.com/x/?appId=qxtcorp306130',
+          five: urlPre + "/boe/new-employee/index.html",
+          six: urlPre + "/web/contributor/index",
+        };
+        window.open(obj[val]);
+      }
     },
     handleUcCommand(val) {
       if (val == 'uc') {