diff --git a/README.md b/README.md
index e1cf6c8..085074d 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
new file mode 100644
index 0000000..214a0d7
--- /dev/null
+++ b/picture-save.svg
@@ -0,0 +1 @@
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diff --git a/picture/picture-save.drawio.svg b/picture/picture-save.drawio.svg
index e60694f..fdbd0ec 100644
--- a/picture/picture-save.drawio.svg
+++ b/picture/picture-save.drawio.svg
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+    <defs/>
+    <g>
+        <path d="M 75 80 L 75 113.63" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 75 118.88 L 71.5 111.88 L 75 113.63 L 78.5 111.88 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <ellipse cx="75" cy="40" 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: 40px; 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;">
+                                save_data
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="75" y="44" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    save_data
+                </text>
+            </switch>
+        </g>
+        <path d="M 75 200 L 75 223.63" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 75 228.88 L 71.5 221.88 L 75 223.63 L 78.5 221.88 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 75 120 L 150 160 L 75 200 L 0 160 Z" fill="#ffffff" stroke="#000000" stroke-miterlimit="10" 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: 148px; height: 1px; padding-top: 160px; 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;">
+                                输入文件名
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="75" y="164" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    输入文件名
+                </text>
+            </switch>
+        </g>
+        <path d="M 75 310 L 75 333.63" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 75 338.88 L 71.5 331.88 L 75 333.63 L 78.5 331.88 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 150 270 L 228.63 270" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 233.88 270 L 226.88 273.5 L 228.63 270 L 226.88 266.5 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 75 230 L 150 270 L 75 310 L 0 270 Z" fill="#ffffff" stroke="#000000" stroke-miterlimit="10" 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: 148px; height: 1px; padding-top: 270px; 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;">
+                                打开文件
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="75" y="274" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    打开文件
+                </text>
+            </switch>
+        </g>
+        <path d="M 75 420 L 75 443.63" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 75 448.88 L 71.5 441.88 L 75 443.63 L 78.5 441.88 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 75 340 L 150 380 L 75 420 L 0 380 Z" fill="#ffffff" stroke="#000000" stroke-miterlimit="10" 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: 148px; height: 1px; padding-top: 380px; 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;">
+                                将所有库存记录写入文件
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="75" y="384" fill="#000000" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    将所有库存记录写入文件
+                </text>
+            </switch>
+        </g>
+        <path d="M 75 530 L 75 543.63" fill="none" stroke="#000000" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 75 548.88 L 71.5 541.88 L 75 543.63 L 78.5 541.88 Z" fill="#000000" stroke="#000000" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 75 450 L 150 490 L 75 530 L 0 490 Z" fill="#ffffff" stroke="#000000" stroke-miterlimit="10" 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: 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>
\ No newline at end of file