diff --git a/papers/Policy_gradient/Action-depedent Control Variates for Policy Optimization via Stein’s Identity.md b/papers/Policy_gradient/Action-depedent Control Variates for Policy Optimization via Stein’s Identity.md
index 4946486..95f6c19 100644
--- a/papers/Policy_gradient/Action-depedent Control Variates for Policy Optimization via Stein’s Identity.md	
+++ b/papers/Policy_gradient/Action-depedent Control Variates for Policy Optimization via Stein’s Identity.md	
@@ -82,7 +82,7 @@ $$
 
 #### 算法
 
-<img src="img/Stein2.png" alt="截屏2022-12-05 19.58.49" style="zoom:67%;" />
+#### <img src="img/Stein2.png" alt="截屏2022-12-05 19.58.49" style="zoom:67%;" />
 
 运用Stein控制变量的PPO算法。