diff --git a/README.md b/README.md
index 6ef1600..da432b0 100644
--- a/README.md
+++ b/README.md
@@ -370,7 +370,7 @@ 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/save_data.drawio.svg)
+![保存数据流程图](picture-save.svg)
 
 #### add_data
 
@@ -416,7 +416,7 @@ Step 3: if 没有该图书then 则输出图书不存在
 Step 4: 将查找到的图书后面的依次往前移动信息
 Step 5: 将图书总数减一
 Step 6: 提示删除成功
-![打印记录流程图](deletesortupdate.svg)
+![打印记录流程图](images/delete_data.drawio.svg)
 
 
 #### sort_data
diff --git a/picture-save.svg b/picture-save.svg
index c305db7..214a0d7 100644
--- a/picture-save.svg
+++ b/picture-save.svg
@@ -1 +1 @@
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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 148px; height: 1px; padding-top: 490px; margin-left: 1px;"><div data-drawio-colors="color: #000000; background-color: #FFFFFF; " 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; background-color: rgb(255, 255, 255); white-space: normal; overflow-wrap: normal;">关闭文件</div></div></div></foreignObject><text x="75" y="494" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">关闭文件</text></switch></g><ellipse cx="75" cy="590" rx="60" ry="40" fill="#ffffff" stroke="#000000" 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: 590px; margin-left: 16px;"><div data-drawio-colors="color: #000000; background-color: #FFFFFF; " 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; background-color: rgb(255, 255, 255); white-space: normal; overflow-wrap: normal;">j结束</div></div></div></foreignObject><text x="75" y="594" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">j结束</text></switch></g><path d="M 355 270 L 385 270 Q 395 270 395 280 L 395 530 Q 395 540 385 540 L 81.37 540" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 76.12 540 L 83.12 536.5 L 81.37 540 L 83.12 543.5 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/><rect x="235" y="240" width="120" height="60" fill="#ffffff" stroke="#000000" 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: 270px; margin-left: 236px;"><div data-drawio-colors="color: #000000; background-color: #FFFFFF; " 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; background-color: rgb(255, 255, 255); white-space: normal; overflow-wrap: normal;">提示打开文件失败</div></div></div></foreignObject><text x="295" y="274" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">提示打开文件失败</text></switch></g><rect x="170" y="245" width="30" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 260px; margin-left: 185px;"><div data-drawio-colors="color: #000000; " 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: nowrap;">N</div></div></div></foreignObject><text x="185" y="264" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">N</text></switch></g><rect x="85" y="310" width="30" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 325px; margin-left: 100px;"><div data-drawio-colors="color: #000000; " 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: nowrap;">Y</div></div></div></foreignObject><text x="100" y="329" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">Y</text></switch></g></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%">Text is not SVG - cannot display</text></a></switch></svg>
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