diff --git a/src/main/java/com/project/information/domain/service/impl/UpdateProductLineDomainServiceImpl.java b/src/main/java/com/project/information/domain/service/impl/UpdateProductLineDomainServiceImpl.java
index f8e23ec..499ae82 100644
--- a/src/main/java/com/project/information/domain/service/impl/UpdateProductLineDomainServiceImpl.java
+++ b/src/main/java/com/project/information/domain/service/impl/UpdateProductLineDomainServiceImpl.java
@@ -1,6 +1,5 @@
 package com.project.information.domain.service.impl;
 
-import cn.hutool.core.util.BooleanUtil;
 import cn.hutool.core.util.StrUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.project.base.domain.exception.BusinessErrorException;
@@ -28,16 +27,26 @@ public class UpdateProductLineDomainServiceImpl implements UpdateProductLineDoma
             throw new BusinessErrorException("名称不能为空");
         }
         ProductLineEntity entity = productLineBaseService.getById(dto.getId());
+        if (entity == null) {
+            throw new BusinessErrorException("产品线不存在");
+        }
         LambdaQueryWrapper<ProductLineEntity> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.eq(ProductLineEntity::getBusiness , entity.getBusiness());
-        queryWrapper.eq(ProductLineEntity::getLeaf , entity.getLeaf());
+        queryWrapper.eq(ProductLineEntity::getBusiness, entity.getBusiness());
+        if (Boolean.TRUE.equals(entity.getLeaf())) {
+            // 子产品线：同一父级下名称不能重复
+            queryWrapper.eq(ProductLineEntity::getParentId, entity.getParentId());
+        } else {
+            // 产品线：同一 BG 下名称不能重复
+            queryWrapper.eq(ProductLineEntity::getLeaf, false);
+        }
         queryWrapper.eq(ProductLineEntity::getName , dto.getName());
-        ProductLineEntity existOne = productLineBaseService.getOne(queryWrapper);
-        if (Objects.nonNull(existOne)) {
-            if (BooleanUtil.isFalse(entity.getLeaf())) {
-                throw new BusinessErrorException("同一 BG 下产品线名称不能重复");
-            } else {
+        queryWrapper.ne(ProductLineEntity::getId , dto.getId());
+        long count = productLineBaseService.count(queryWrapper);
+        if (count > 0) {
+            if (Boolean.TRUE.equals(entity.getLeaf())) {
                 throw new BusinessErrorException("同一产品线下子产品线名称不能重复");
+            } else {
+                throw new BusinessErrorException("同一 BG 下产品线名称不能重复");
             }
         }
         entity.setName(dto.getName());