diff --git a/src/main/java/com/pms/ocp/model/vo/OcpModelGroupVO.java b/src/main/java/com/pms/ocp/model/vo/OcpModelGroupVO.java
index 68a5c6cd9105c48f1c189915b6ef32566528cd34..1cfaaa2e03c42f64c61a6f13f45329da659d937b 100644
--- a/src/main/java/com/pms/ocp/model/vo/OcpModelGroupVO.java
+++ b/src/main/java/com/pms/ocp/model/vo/OcpModelGroupVO.java
@@ -88,12 +88,15 @@ public class OcpModelGroupVO implements Serializable {
     @ApiModelProperty(value = "是否已删除0未删除 1未删除")
     private Integer isDelete;
 
+    @TableField(exist = false)
+    @ApiModelProperty(value = "层级")
+    private int level;
     /**
      * 子类集合
      */
     @TableField(exist = false)
     @ApiModelProperty(value = "子类集合")
-    List<OcpModelGroupVO> childrenList;
+    private List<OcpModelGroupVO> childrenList;
 
     public String getModelGroupCode() {
         return modelGroupCode == null ? "" : modelGroupCode;
@@ -102,6 +105,7 @@ public class OcpModelGroupVO implements Serializable {
     public String getModelGroupPcode() {
         return modelGroupPcode == null ? "" : modelGroupPcode;
     }
+
 }
  
  
diff --git a/src/main/java/com/pms/ocp/service/impl/ModelClassifyServiceImpl.java b/src/main/java/com/pms/ocp/service/impl/ModelClassifyServiceImpl.java
index 4855c8d9795645bfbdfe0c2633981d510d7a2a07..f8f7dda6c689dd6c844cbbab8d8351e907d899aa 100644
--- a/src/main/java/com/pms/ocp/service/impl/ModelClassifyServiceImpl.java
+++ b/src/main/java/com/pms/ocp/service/impl/ModelClassifyServiceImpl.java
@@ -64,7 +64,6 @@ public class ModelClassifyServiceImpl implements ModelClassifyService {
      **/
     @Override
     public ResponseVO<PageInfo<OcpModelGroupVO>> subclassDetailsList(int currentPage,int pageSize,String parentGroupCode,String subclassGroupName) {
-
         //查询所有
         List<OcpModelGroupVO> ocpModelGroupVOList = this.selectByCondition(null,null);
         //将查询到所有数据的list转换为key为分类code,value为本身的map
@@ -140,7 +139,11 @@ public class ModelClassifyServiceImpl implements ModelClassifyService {
 
     /**
      * 构建树节点
-     */
+     * @author huxiuwu
+     * @date 2022/3/10
+     * @param treeNodes 需要构建的list
+     * @return List<com.pms.ocp.model.vo.OcpModelGroupVO>
+     **/
     private List<OcpModelGroupVO> build(List<OcpModelGroupVO> treeNodes) {
         List<OcpModelGroupVO> result = new ArrayList<>();
         //list转map =>将每个对象的id作为key,自己作为value.
@@ -152,9 +155,12 @@ public class ModelClassifyServiceImpl implements ModelClassifyService {
             //得到自己的父类
             OcpModelGroupVO parent = nodeMap.get(node.getModelGroupPcode());
             if (parent != null && !(node.getModelGroupCode().equals(parent.getModelGroupCode()))) {
+                //防止每次都new list或者只是使用该对象就new对象浪费内存或者覆盖上一次记录
                 if (parent.getChildrenList() == null) {
                     parent.setChildrenList(new LinkedList<>());
                 }
+                //说明他有父类其下子类都需要加一级
+                addLevel(node,treeNodes);
                 parent.getChildrenList().add(node);
                 continue;
             }
@@ -162,6 +168,21 @@ public class ModelClassifyServiceImpl implements ModelClassifyService {
         }
         return result;
     }
+    /**
+     *
+     * @author huxiuwu
+     * @date 2022/3/10
+     * @param parent 父类
+     * @param treeNodes 需要遍历list
+     **/
+    private void addLevel(OcpModelGroupVO parent, List<OcpModelGroupVO> treeNodes) {
+        parent.setLevel(parent.getLevel()+1);
+        for (OcpModelGroupVO treeNode : treeNodes) {
+            if (treeNode != null && parent.getModelGroupCode().equals(treeNode.getModelGroupPcode())){
+                addLevel(treeNode,treeNodes);
+            }
+        }
+    }
 
     private List<OcpModelGroupVO> selectByCondition(String... searchCondition) {
         QueryWrapper<OcpModelGroupVO> queryWrapper = new QueryWrapper<>();