diff --git a/README.md b/README.md
index 89bde19..1f2963d 100644
--- a/README.md
+++ b/README.md
@@ -311,4 +311,29 @@ Step4: if输入的商品id不存在则返回“您输入的商品名称没有找
 Step1：if没有商品数据则显示“您的数据库内没有商品！”
 step2: 输入商品编号打印表格
 
-![图表模块流程图](images/Show.drawio.svg)
\ No newline at end of file
+![图表模块流程图](images/Show.drawio.svg)
+#### main
+
+Step 1: 初始化
+Step 2: 根据用户选择的命令执行对应的操作
+Step 2.1: 显示菜单
+Step 2.2: 选择菜单命令 c
+Step 2.3: if c == CMD_READ then 读取数据
+Step 2.4: if c == CMD_SAVE then 保存数据
+Step 2.5: if c == CMD_PRINT then 打印数据
+Step 2.6: 
+
+
+![主程序流程图](images/main.drawio.svg)
+
+
+#### savedata
+
+Step 1: 输入文件名
+Step 2: 打开文件
+Step 3: if 打开文件失败 then 提示打开文件失败并结束
+Step 4: 将所有库存记录写入文件
+Step 5: 关闭文件
+
+
+![保存数据流程图](images/saveData.drawio.svg)
\ No newline at end of file
diff --git a/graph/increase_count.drawio.svg b/graph/increase_count.drawio.svg
index 2b61434..aa0da0a 100644
--- a/graph/increase_count.drawio.svg
+++ b/graph/increase_count.drawio.svg
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diff --git a/graph/insert.drawio.svg b/graph/insert.drawio.svg
index 3648733..084e7de 100644
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+        <path d="M 170 140 L 170 50" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="0" y="295" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
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             <switch>
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-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 168px; height: 1px; padding-top: 35px; margin-left: 1px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 325px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                添加模块
+                                不存在返回error
                             </div>
                         </div>
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-                <text x="85" y="39" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    添加模块
+                <text x="60" y="329" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    不存在返回error
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-        <path d="M 25 220 L 45 170 L 145 170 L 125 220 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 280 420 L 280 360" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="220" y="420" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
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-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 195px; margin-left: 26px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 450px; margin-left: 221px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                判断链表是否存在
+                                输入结束返回ok
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                         </div>
                     </div>
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-                <text x="85" y="199" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    判断链表是否存在
+                <text x="280" y="454" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    输入结束返回ok
                 </text>
             </switch>
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+        <ellipse cx="170" cy="40" rx="60" ry="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 320px; margin-left: 11px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 111px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                不存在返回error
+                                添加模块
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                         </div>
                     </div>
                 </foreignObject>
-                <text x="70" y="324" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    不存在返回error
+                <text x="170" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    添加模块
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-        <rect x="200" y="250" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 170 140 L 240 180 L 170 220 L 100 180 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
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             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 280px; margin-left: 201px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 180px; margin-left: 101px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                存在则头插法输入数据
+                                判断链表是否存在
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                     </div>
                 </foreignObject>
-                <text x="260" y="284" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    存在则头插法输入数据
+                <text x="170" y="184" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    判断链表是否存在
                 </text>
             </switch>
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-        <rect x="190" y="365" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 60 295 L 170 220" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="220" y="300" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 395px; margin-left: 191px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 330px; margin-left: 221px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                输入结束返回ok
+                                存在则头插法输入数据
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="250" y="399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    输入结束返回ok
+                <text x="280" y="334" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    存在则头插法输入数据
                 </text>
             </switch>
         </g>
+        <path d="M 272.8 301.2 L 170 220" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
     </g>
     <switch>
         <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
         <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
             <text text-anchor="middle" font-size="10px" x="50%" y="100%">
-                Viewer does not support full SVG 1.1
+                Text is not SVG - cannot display
             </text>
         </a>
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