diff --git a/README.md b/README.md
index 456552d..b06bdd0 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ According to the  [Guide](https://learningos.github.io/rust-based-os-comp2022/),
 - [lab4 in 'os6' DIR](https://classroom.github.com/a/94eMW8zi) ：[Important NOTICE](https://learningos.github.io/rust-based-os-comp2022/chapter6/0intro.html#id3)
 - [lab5 in 'os8' DIR](https://classroom.github.com/a/zqGJEPK-) ：[Important NOTICE](https://learningos.github.io/rust-based-os-comp2022/chapter8/0intro.html#id5)
 
-
+注：lab0-0\lab0-1用于搭建线上或本地实验环境，以及熟悉"提交/CI等"的操作过程，基本上不需要编程。lab1~lab5是实际的OS实验内容，需要编程。
 ## Check your results
 - lab1: `make test3` for lab1
 - lab2: `make test4`  for lab2