diff --git a/2019/12/vue-router.md b/2019/12/vue-router.md
index c8ddcc1..e707fb6 100644
--- a/2019/12/vue-router.md
+++ b/2019/12/vue-router.md
@@ -65,3 +65,52 @@ new Vue({
 ```
 
 全部代码：
+
+app.vue
+
+```
+<template>
+  <div id="app">
+    <router-view></router-view>
+  </div>
+</template>
+
+<script>
+  
+</script>
+
+<style>
+</style>
+
+
+```
+main.js
+
+```
+import Vue from 'vue'
+import App from './App.vue'
+import VueRouter from 'vue-router'
+import aa from "./components/a.vue";
+import bb from "./components/b.vue";
+Vue.use(VueRouter) 
+Vue.config.productionTip = false
+
+const routes= [
+  { path: "/a", component: aa },
+  { path: "/b", component: bb },
+
+]
+const router = new VueRouter({
+  routes // (缩写) 相当于 routes: routes
+})
+
+new Vue({
+  el: '#app',
+  router,
+  render: h => h(App)
+})
+
+
+```
+
+a.
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