diff --git a/zhyc-module/src/main/java/com/zhyc/module/base/mapper/BasSheepGroupMapper.java b/zhyc-module/src/main/java/com/zhyc/module/base/mapper/BasSheepGroupMapper.java
index 52abe57..c14eb81 100644
--- a/zhyc-module/src/main/java/com/zhyc/module/base/mapper/BasSheepGroupMapper.java
+++ b/zhyc-module/src/main/java/com/zhyc/module/base/mapper/BasSheepGroupMapper.java
@@ -2,6 +2,7 @@ package com.zhyc.module.base.mapper;
 
 import com.zhyc.module.base.domain.BasSheepGroup;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
 
 import java.util.List;
 
@@ -64,4 +65,8 @@ public interface BasSheepGroupMapper
 
     List<BasSheepGroup> selectLeafNodes();
 
+
+    // 新增方法：根据父节点和分组名称查询是否存在
+    BasSheepGroup selectByParentIdAndGroupName(@Param("parentId") Long parentId, @Param("groupName") String groupName);
+
 }
diff --git a/zhyc-module/src/main/java/com/zhyc/module/base/service/impl/BasSheepGroupServiceImpl.java b/zhyc-module/src/main/java/com/zhyc/module/base/service/impl/BasSheepGroupServiceImpl.java
index 3d375b3..d67a55b 100644
--- a/zhyc-module/src/main/java/com/zhyc/module/base/service/impl/BasSheepGroupServiceImpl.java
+++ b/zhyc-module/src/main/java/com/zhyc/module/base/service/impl/BasSheepGroupServiceImpl.java
@@ -1,5 +1,6 @@
 package com.zhyc.module.base.service.impl;
 
+import com.zhyc.common.exception.ServiceException;
 import com.zhyc.common.utils.DateUtils;
 import com.zhyc.module.base.domain.BasSheepGroup;
 import com.zhyc.module.base.mapper.BasSheepGroupMapper;
@@ -68,6 +69,12 @@ public class BasSheepGroupServiceImpl implements IBasSheepGroupService
     @Override
     public int insertBasSheepGroup(BasSheepGroup basSheepGroup)
     {
+        // ✅ 新增唯一性校验
+        BasSheepGroup existing = basSheepGroupMapper.selectByParentIdAndGroupName(
+                basSheepGroup.getParentId(), basSheepGroup.getGroupName());
+        if (existing != null) {
+            throw new ServiceException("同一分支下已存在该分组名称");
+        }
         basSheepGroup.setCreateTime(DateUtils.getNowDate());
         return basSheepGroupMapper.insertBasSheepGroup(basSheepGroup);
     }
@@ -81,6 +88,12 @@ public class BasSheepGroupServiceImpl implements IBasSheepGroupService
     @Override
     public int updateBasSheepGroup(BasSheepGroup basSheepGroup)
     {
+        // ✅ 新增唯一性校验（排除当前记录）
+        BasSheepGroup existing = basSheepGroupMapper.selectByParentIdAndGroupName(
+                basSheepGroup.getParentId(), basSheepGroup.getGroupName());
+        if (existing != null && !existing.getGroupId().equals(basSheepGroup.getGroupId())) {
+            throw new ServiceException("同一分支下已存在该分组名称");
+        }
         basSheepGroup.setUpdateTime(DateUtils.getNowDate());
         return basSheepGroupMapper.updateBasSheepGroup(basSheepGroup);
     }
diff --git a/zhyc-module/src/main/resources/mapper/base/BasSheepGroupMapper.xml b/zhyc-module/src/main/resources/mapper/base/BasSheepGroupMapper.xml
index 5f0aab6..bb0ff09 100644
--- a/zhyc-module/src/main/resources/mapper/base/BasSheepGroupMapper.xml
+++ b/zhyc-module/src/main/resources/mapper/base/BasSheepGroupMapper.xml
@@ -126,5 +126,11 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </foreach>
     </delete>
 
+    <select id="selectByParentIdAndGroupName" resultMap="BasSheepGroupResult">
+        SELECT * FROM bas_sheep_group
+        WHERE parent_id = #{parentId} AND group_name = #{groupName}
+            LIMIT 1
+    </select>
+
 
 </mapper>
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