diff --git a/README.md b/README.md
index 7945652..ba05b23 100644
--- a/README.md
+++ b/README.md
@@ -402,10 +402,10 @@ Step 5: 关闭文件
 #### add_data
 
 Step 1: if 数据库满 then 提示数据库满并结束
-Step 2: 输入零件编号
-Step 3: if 零件已存在 then 提示零件已存在并结束
-Step 4: 输入零件名和库存数量
-Step 5: 添加新零件到数据
+Step 2: 输入学生学号
+Step 3: if 该学生学号存在 then 提示该学生学号已存在并结束
+Step 4: 输入学生名和学生数量
+Step 5: 添加新学生到数据
 Step 6: 提示添加成功
 
 ![添加库存记录流程图](img/add_data.drawio.svg)
diff --git a/img/add_data.drawio.svg b/img/add_data.drawio.svg
index 1275ffb..a4b55ae 100644
--- a/img/add_data.drawio.svg
+++ b/img/add_data.drawio.svg
@@ -1,8 +1,8 @@
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                                 数据库满？
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                     数据库满？
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