diff --git a/src/plotcutter/plotter.ts b/src/plotcutter/plotter.ts
index 809f56d..413326a 100644
--- a/src/plotcutter/plotter.ts
+++ b/src/plotcutter/plotter.ts
@@ -29,6 +29,7 @@ export function pts2plotter(
   if (sorted.length > 0) {
     const firstPath = sorted[0];
     str += ` U${plu(start[0] * px2mm)},${plu((height - start[1]) * px2mm)}`;
+    str += ` U${plu(firstPath[0][0] * px2mm)},${plu((height - firstPath[0][1]) * px2mm)}`;
     str += ` D${plu(firstPath[0][0] * px2mm)},${plu((height - firstPath[0][1]) * px2mm)}`;
 
     // 切割第一个路径
@@ -66,6 +67,8 @@ export function pts2plotter(
 
   // 返回终点
   str += ` U${plu(end[0] * px2mm)},${plu((height - end[1]) * px2mm)}`;
+  str += ` D${plu(end[0] * px2mm)},${plu((height - end[1]) * px2mm)}`;
+  str += ` U${plu(end[0] * px2mm)},${plu((height - end[1]) * px2mm)}`;
   str += endCommand();
 
   return str;