diff --git a/README.md b/README.md
index e90139f..e25ac18 100644
--- a/README.md
+++ b/README.md
@@ -342,3 +342,13 @@ Step 2.12: if c == CMD_QUIT then 退出
 
 
 ![](pictures/main_chart.drawio.svg)
+
+
+
+
+#### make_chart
+
+Step 1: 读取文件
+Step 2: 显示图表
+
+![](pictures/make_chart.drawio.svg)
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