diff --git a/README.md b/README.md
index 6b3c978..3cdbf9c 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
-## Image Decode Implementation with CV2
+# Image Decode Implementation with CV2
 
 *author: Kaiyuan Hu, Rentong Guo*
 
 
 
-### Desription
+## Desription
 
 An image decode operator implementation with OpenCV.
 
@@ -19,7 +19,7 @@ img = img_decode('./dog.jpg')
 
 
 
-### Factory method
+## Factory method
 
 Create the operator via the following factory method
 
@@ -27,7 +27,7 @@ Create the operator via the following factory method
 
 
 
-### Interface
+## Interface
 
 An image decode operator takes an image path as input. It decodes the image back to ndarray.
 
@@ -47,7 +47,7 @@ An image decode operator takes an image path as input. It decodes the image back
 
 
 
-### Code Example
+## Code Example
 
 Load a image from path './dog.jpg'.