diff --git a/src/views/mapPage/realTimeMap/editMap.vue b/src/views/mapPage/realTimeMap/editMap.vue
index 77949a51..620993cb 100644
--- a/src/views/mapPage/realTimeMap/editMap.vue
+++ b/src/views/mapPage/realTimeMap/editMap.vue
@@ -2029,16 +2029,28 @@ const clickDrawSelectionArea = () => {
 //将一个数组中的点位 按照第一个和最后一个排成一条直线
 const mapPointsToLine = (points) => {
   // 找出 locationX 最大和最小的项
+  // let minXPoint = points[0]
+  // let maxXPoint = points[0]
+  // points.forEach((point) => {
+  //   if (point.locationX < minXPoint.locationX) {
+  //     minXPoint = point
+  //   }
+  //   if (point.locationX > maxXPoint.locationX) {
+  //     maxXPoint = point
+  //   }
+  // })
+
+  // 找出sortNum最小和最大的点
   let minXPoint = points[0]
   let maxXPoint = points[0]
-  points.forEach((point) => {
-    if (point.locationX < minXPoint.locationX) {
-      minXPoint = point
+  for (let i = 1; i < points.length; i++) {
+    if (points[i].sortNum < minXPoint.sortNum) {
+      minXPoint = points[i]
     }
-    if (point.locationX > maxXPoint.locationX) {
-      maxXPoint = point
+    if (points[i].sortNum > maxXPoint.sortNum) {
+      maxXPoint = points[i]
     }
-  })
+  }
 
   const dx = maxXPoint.locationX - minXPoint.locationX
   const dy = maxXPoint.locationY - minXPoint.locationY