diff --git a/2019/12/vue-router.md b/2019/12/vue-router.md
index b6d2e9f..5573f25 100644
--- a/2019/12/vue-router.md
+++ b/2019/12/vue-router.md
@@ -32,3 +32,14 @@ const routes= [
 ```
 
 2.实例化 VuRouter
+
+```
+const router = new VueRouter({
+  routes // (缩写) 相当于 routes: routes
+})
+
+```
+
+3.渲染
+（1） 在src/main.js中
+```
\ No newline at end of file