diff --git a/README.md b/README.md
index 49e69c3..eb9c544 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ If you have any questions or suggestions, please don't hesitate to leave them in
 
 ### Node `Zero123: Image Preprocess`
 
-![simple image process](images/image_preprocess)
+![simple image process](images/image_preprocess.png)
 
 ## PREREQUISITES
 
diff --git a/README_CN.md b/README_CN.md
index e84dcd1..356a9d6 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -22,7 +22,7 @@
 
 ### 节点 `Zero123: Image Preprocess`
 
-![simple image process](images/image_preprocess)
+![simple image process](images/image_preprocess.png)
 
 ## 前提条件