diff --git a/README.md b/README.md
index faaaa0590..99ff27d35 100644
--- a/README.md
+++ b/README.md
@@ -38,17 +38,17 @@ OceanBase Database is under [MulanPubL - 2.0](https://license.coscl.org.cn/Mulan
 
 ## How to build
 
-#### debug mode
+### debug mode
 ```sh
 sh build.sh debug --init --make
 ```
 
-#### release mode
+### release mode
 ```sh
 sh build.sh release --init --make
 ```
 
-#### rpm packages
+### rpm packages
 ```sh
 sh build.sh rpm --init && cd build_rpm && make -j16 rpm
 ```