diff --git a/src/main/java/com/jsh/erp/constants/ExceptionConstants.java b/src/main/java/com/jsh/erp/constants/ExceptionConstants.java
index 36eae9fd..3eec3aef 100644
--- a/src/main/java/com/jsh/erp/constants/ExceptionConstants.java
+++ b/src/main/java/com/jsh/erp/constants/ExceptionConstants.java
@@ -72,6 +72,9 @@ public class ExceptionConstants {
     //修改商品类别信息失败
     public static final int MATERIAL_CATEGORY_EDIT_FAILED_CODE = 7500002;
     public static final String MATERIAL_CATEGORY_EDIT_FAILED_MSG = "添加商品类别信息失败";
+    //商品类别编号已存在
+    public static final int MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_CODE = 7500003;
+    public static final String MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_MSG = "商品类别编号已存在";
 
     /**
      * 标准正常返回/操作成功返回
diff --git a/src/main/java/com/jsh/erp/datasource/mappers/MaterialCategoryMapperEx.java b/src/main/java/com/jsh/erp/datasource/mappers/MaterialCategoryMapperEx.java
index e31814d1..d82ff230 100644
--- a/src/main/java/com/jsh/erp/datasource/mappers/MaterialCategoryMapperEx.java
+++ b/src/main/java/com/jsh/erp/datasource/mappers/MaterialCategoryMapperEx.java
@@ -32,4 +32,6 @@ public interface MaterialCategoryMapperEx {
     int batchDeleteMaterialCategoryByIds(@Param("updateTime") Date updateTime, @Param("updater") Long updater, @Param("ids") String ids[]);
 
     int editMaterialCategory(MaterialCategory mc);
+
+    List<MaterialCategory> getMaterialCategoryBySerialNo(@Param("serialNo") String serialNo);
 }
diff --git a/src/main/java/com/jsh/erp/service/materialCategory/MaterialCategoryService.java b/src/main/java/com/jsh/erp/service/materialCategory/MaterialCategoryService.java
index 56cad692..4fa2f601 100644
--- a/src/main/java/com/jsh/erp/service/materialCategory/MaterialCategoryService.java
+++ b/src/main/java/com/jsh/erp/service/materialCategory/MaterialCategoryService.java
@@ -2,12 +2,14 @@ package com.jsh.erp.service.materialCategory;
 
 import com.alibaba.fastjson.JSONObject;
 import com.jsh.erp.constants.BusinessConstants;
+import com.jsh.erp.constants.ExceptionConstants;
 import com.jsh.erp.datasource.entities.MaterialCategory;
 import com.jsh.erp.datasource.entities.MaterialCategoryExample;
 import com.jsh.erp.datasource.entities.User;
 import com.jsh.erp.datasource.mappers.MaterialCategoryMapper;
 import com.jsh.erp.datasource.mappers.MaterialCategoryMapperEx;
 import com.jsh.erp.datasource.vo.TreeNode;
+import com.jsh.erp.exception.BusinessRunTimeException;
 import com.jsh.erp.service.user.UserService;
 import com.jsh.erp.utils.StringUtil;
 import org.slf4j.Logger;
@@ -117,6 +119,8 @@ public class MaterialCategoryService {
             //没有给定父级目录的id，默认设置父级目录为根目录
             mc.setParentid(BusinessConstants.MATERIAL_CATEGORY_ROOT_ID);
         }
+        //检查商品类型编号是否已存在
+        checkMaterialCategorySerialNo(mc);
         //数据状态新增时默认设置为启用
         mc.setStatus(BusinessConstants.MATERIAL_CATEGORY_STATUS_ENABLE);
         Date date=new Date();
@@ -147,6 +151,8 @@ public class MaterialCategoryService {
     }
 
     public int editMaterialCategory(MaterialCategory mc) {
+        //检查商品类型编号是否已存在
+        checkMaterialCategorySerialNo(mc);
         //更新时间
         mc.setUpdateTime(new Date());
         //更新人
@@ -154,4 +160,37 @@ public class MaterialCategoryService {
         mc.setUpdater(userInfo==null?null:userInfo.getId());
         return materialCategoryMapperEx.editMaterialCategory(mc);
     }
+    /**
+     * 根据商品类别编号判断商品类别是否已存在
+     * */
+    public void  checkMaterialCategorySerialNo(MaterialCategory mc) {
+        if(mc==null){
+            return;
+        }
+        if(StringUtil.isEmpty(mc.getSerialNo())){
+            return;
+        }
+        //根据商品类别编号查询商品类别
+        List<MaterialCategory> mList=materialCategoryMapperEx.getMaterialCategoryBySerialNo(mc.getSerialNo());
+        if(mList==null||mList.size()<1){
+            //未查询到对应数据，编号可用
+            return;
+        }
+        if(mList.size()>1){
+            //查询到的数据条数大于1，编号已存在
+            throw new BusinessRunTimeException(ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_CODE,
+                    ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_MSG);
+        }
+        if(mc.getId()==null){
+            //新增时，编号已存在
+            throw new BusinessRunTimeException(ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_CODE,
+                    ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_MSG);
+        }
+        if(mc.getId()!=mList.get(0).getId()){
+            //修改时，相同编号，id不同
+            throw new BusinessRunTimeException(ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_CODE,
+                    ExceptionConstants.MATERIAL_CATEGORY_SERIAL_ALREADY_EXISTS_MSG);
+        }
+    }
+
 }
diff --git a/src/main/resources/mapper_xml/MaterialCategoryMapperEx.xml b/src/main/resources/mapper_xml/MaterialCategoryMapperEx.xml
index bbb493c8..f8266cd1 100644
--- a/src/main/resources/mapper_xml/MaterialCategoryMapperEx.xml
+++ b/src/main/resources/mapper_xml/MaterialCategoryMapperEx.xml
@@ -91,5 +91,13 @@
         name=#{name},remark=#{remark}
        where id =#{id}
     </update>
+    <select  id="getMaterialCategoryBySerialNo" resultMap="com.jsh.erp.datasource.mappers.MaterialCategoryMapper.BaseResultMap">
+        select
+        <include refid="com.jsh.erp.datasource.mappers.MaterialCategoryMapper.Base_Column_List"/>
+        FROM jsh_materialcategory
+        where 1=1
+        and serial_no=#{serialNo}
+        and status !='2'
+    </select>
 
 </mapper>
\ No newline at end of file