diff --git a/2019/12/vue-router.md b/2019/12/vue-router.md
index 5513e5f..6b15243 100644
--- a/2019/12/vue-router.md
+++ b/2019/12/vue-router.md
@@ -205,4 +205,9 @@ new Vue({
 
 ```
 
-(2) 定义route.beforeEach
\ No newline at end of file
+(2) 定义route.beforeEach
+
+```
+router
+
+```
\ No newline at end of file