diff --git a/src/components/guide/index.js b/src/components/guide/index.js
index 562fa96..a33c51a 100644
--- a/src/components/guide/index.js
+++ b/src/components/guide/index.js
@@ -2,25 +2,26 @@ import { transform, i18n, lan } from '../../unit/const'
 import { isMobile } from '../../unit'
 export default {
   name: 'Guide',
-  data(){
-     return {
-       isMobile:isMobile()
-     }
+  data() {
+    return {
+      isMobile: isMobile()
+    }
   },
   computed: {
     linkTitle: () => i18n.linkTitle[lan],
     github: () => i18n.github[lan],
     QRCode: () => i18n.QRCode[lan],
     QRTitle: () => i18n.QRNotice[lan],
-    QRSrc: () => "http://binaryify.github.io/vue-tetris/static/qr.jpeg"
-      
+    QRSrc: () =>
+      window.location.protocol +
+      '//binaryify.github.io/vue-tetris/static/qr.jpeg'
   },
-  mounted(){
+  mounted() {
     window.addEventListener('resize', this.resize.bind(this), true)
   },
-  methods:{
-    resize(){
-      this.isMobile=isMobile()
+  methods: {
+    resize() {
+      this.isMobile = isMobile()
     }
   }
 }