diff --git a/doc/README.md b/doc/README.md
index 76343be..93331d4 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -14,6 +14,7 @@
 ```bash
 java -jar MathSystem.jar
 ```
+在powershell运行：
 
 ```powershell
 chcp 65001
@@ -21,6 +22,7 @@ chcp 65001
 [Console]::OutputEncoding = [System.Text.UTF8Encoding]::new()
 java -jar MathSystem.jar
 ```
+在cmd运行：
 
 ```cmd
 chcp 65001