diff --git a/TangDou/AcWing_TiGao/T3/MiniPathYingYong/342.md b/TangDou/AcWing_TiGao/T3/MiniPathYingYong/342.md
index 1e64079..a8ba284 100644
--- a/TangDou/AcWing_TiGao/T3/MiniPathYingYong/342.md
+++ b/TangDou/AcWing_TiGao/T3/MiniPathYingYong/342.md
@@ -72,6 +72,8 @@
 #### 算法步骤
 <center><img src='https://cdn.acwing.com/media/article/image/2021/07/12/61813_53a888d8e2-image-20210323144423779.png'></center>
 
+扩展：用拓扑排序解决dag带负权图的最短路问题
+![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202312291324775.png)
 
 #### $Code$
 ```cpp {.line-numbers}