diff --git a/src/utils/index.js b/src/utils/index.js
index 8b3204716..cf921a389 100644
--- a/src/utils/index.js
+++ b/src/utils/index.js
@@ -144,6 +144,7 @@ export function deepClone(item) {
     return target;
 }
 
+// 对象深拷贝并赋值
 export function deepAssign(obj, item) {
     const target = item.constructor === Array ? [] : {}; // 判断复制的目标是数组还是对象
     for (const keys in item) {
diff --git a/src/views/newMap/newMapdraft/mapoperate/section/index.vue b/src/views/newMap/newMapdraft/mapoperate/section/index.vue
index 6f8bd1d46..946450d04 100644
--- a/src/views/newMap/newMapdraft/mapoperate/section/index.vue
+++ b/src/views/newMap/newMapdraft/mapoperate/section/index.vue
@@ -234,9 +234,6 @@ export default {
                 rightStopPointOffset: [
                     { required: true, message: this.$t('rules.rightStopPointOffset'), trigger: 'blur' }
                 ],
-                // destinationCode: [
-                //     { required: true, message: this.$t('rules.destinationCode'), trigger: 'blur' }
-                // ],
                 'destinationCodePoint.x': [
                     { required: true, message: this.$t('rules.destinationCodePointX'), trigger: 'blur' }
                 ],
@@ -403,7 +400,7 @@ export default {
                 this.editModel = deepAssign(this.editModel, selected);
                 this.editModel.logicSectionNum = selected.type === '01' ? selected.logicSectionNum : [0];
                 this.editModel.points = JSON.parse(JSON.stringify(selected.points));
-                this.editModel.lengthFact = selected.lengthFact || 0;
+                this.editModel.lengthFact = selected.lengthFact || 0; // 过滤非正常数值
                 this.oldPoint = JSON.parse(JSON.stringify(selected.points));
                 this.oldLeftSectionCode = selected.leftSectionCode;
                 this.oldRightSectionCode = selected.rightSectionCode;
@@ -488,7 +485,7 @@ export default {
                 if (section.parentCode === model.code) {
                     const copySection = deepAssign({}, section);
                     copySection.logicSectionShow = model.logicSectionShow;
-                    // copySection.lengthFact = (Number(model.lengthFact) / model.logicSectionCodeList.length).toFixed(3);
+                    // copySection.lengthFact = (Number(model.lengthFact) / model.logicSectionCodeList.length).toFixed(3); // 容易变成正无穷 或者 NaN
                     copySection.stationCode = model.stationCode; // 给元素 子逻辑区段设置 设备集中站
                     models.push(copySection);
                 } else if (model.code !== section.code && (section.type === '01' || section.type === '03')) {
diff --git a/src/views/newMap/newMapdraft/mapoperate/section/logicBlock.vue b/src/views/newMap/newMapdraft/mapoperate/section/logicBlock.vue
index 6ce986529..dc5039e17 100644
--- a/src/views/newMap/newMapdraft/mapoperate/section/logicBlock.vue
+++ b/src/views/newMap/newMapdraft/mapoperate/section/logicBlock.vue
@@ -81,7 +81,10 @@ export default {
             this.tableData.forEach((ele, index) => {
                 totalNum += Number(ele.num);
             });
-            const lineLength = lengthFact / totalNum; // 均分逻辑区段偏移量
+            let lineLength = 0; // 默认实际长度为0
+            if (totalNum) {
+                lineLength = lengthFact / totalNum; // 均分逻辑区段偏移量
+            }
             this.tableData.forEach((ele, index) => {
                 models = [...models, ...this.createLogicalSections(Number(ele.num), sectionPoints[index], sectionPoints[index + 1], this.editModel, counts, lineLength, totalNum)];
                 allNotZeros = Number(ele.num) && allNotZeros;
@@ -173,7 +176,7 @@ export default {
                 trainPosType: model.trainPosType,
                 points: points,
                 curve: false,
-                lengthFact: lineLength.toFixed(3),
+                lengthFact: lineLength ? lineLength.toFixed(3) : lineLength,
                 trainWindowCode: '',
                 kmRangeRight: model.kmRangeRight,
                 kmRangeLeft: model.kmRangeLeft,