diff --git a/docs/chapter12/project3.md b/docs/chapter12/project3.md
index b106822..5134cfb 100644
--- a/docs/chapter12/project3.md
+++ b/docs/chapter12/project3.md
@@ -73,4 +73,6 @@ for i_episode in range(1, cfg.max_episodes+1): # cfg.max_episodes为最大训练
 
 **plot.py**：保存相关绘制函数
 
-**noise.py**：保存噪声相关
\ No newline at end of file
+**noise.py**：保存噪声相关
+
+[参考代码](https://github.com/datawhalechina/leedeeprl-notes/tree/master/codes/ddpg)
\ No newline at end of file
diff --git a/docs/chapter7/project2.md b/docs/chapter7/project2.md
index 540b1e5..f372d42 100644
--- a/docs/chapter7/project2.md
+++ b/docs/chapter7/project2.md
@@ -68,3 +68,4 @@ for i_episode in range(1, cfg.max_episodes+1): # cfg.max_episodes为最大训练
 
 **plot.py**：保存相关绘制函数
 
+[参考代码](https://github.com/datawhalechina/leedeeprl-notes/tree/master/codes/dqn)
\ No newline at end of file