diff --git a/README.md b/README.md
index 9c5caab55c5af6fc1913674db174c297c52bcd0b..489b6d0a4e12db06c9f2c1274e7a87f22cf76655 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,8 @@ mkdir debug && cd debug
 cmake .. && cmake --build .
 ```
 
-To compile on an ARM processor (aarch64 or aarch32), please add option CPUTYPE as below:
+TDengine build script can detect the host machine's architecture on X86-64, X86, arm64 and arm32 platform.
+You can also specify CPUTYPE option like aarch64 or aarch32 too if the detection result is not correct:
 
 aarch64:
 ```bash