diff --git a/docs/chapter3/porject1.md b/docs/chapter3/porject1.md
index 3658564..ba6911e 100644
--- a/docs/chapter3/porject1.md
+++ b/docs/chapter3/porject1.md
@@ -40,3 +40,4 @@
 
 
 
+[参考代码](https://github.com/datawhalechina/leedeeprl-notes/tree/master/codes/snake)
\ No newline at end of file