diff --git a/README.md b/README.md
index e99c48b..29d9b4d 100644
--- a/README.md
+++ b/README.md
@@ -3,16 +3,16 @@ A course project.
 Currently contains 2 algorithm,K-nn and K-means.
 
 
-###K-nn
+### K-nn ###
 ![](https://raw.githubusercontent.com/aiex718/ML_Learning/master/Knn/KNN.png)
 
 
-###K-means
+### K-means ###
 ![](https://raw.githubusercontent.com/aiex718/ML_Learning/master/Kmeans/Kmeans.png)
 
 
 # Usage
-Launch Kmeans.exe or Knn.exe ,input Y for demonstration ,N for custom parameters.
+Launch Kmeans.exe or Knn.exe, input Y for demonstration, N for custom parameters.
 
 
 # Download