diff --git a/README.md b/README.md
index 834f9e6..2c307c0 100644
--- a/README.md
+++ b/README.md
@@ -341,3 +341,9 @@ Step 2.12: if c == CMD_QUIT then 退出
 
 
 ![](pictures/main_chart.drawio.svg)
+
+#### confirm
+
+Step 1: 输出 确定要退出吗
+Step 2: if 确认 then 退出
+