diff --git a/2019/12/vue-router.md b/2019/12/vue-router.md
index 53629b3..0485352 100644
--- a/2019/12/vue-router.md
+++ b/2019/12/vue-router.md
@@ -277,4 +277,6 @@ export default {
 
 ###嵌套路由
 
+1.定义所需要渲染的组件（c,d）
 
+2.main.js