diff --git a/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/pojo/vo/BomNewEbomParentVO.java b/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/pojo/vo/BomNewEbomParentVO.java
index 12b96ce3..b4eacb53 100644
--- a/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/pojo/vo/BomNewEbomParentVO.java
+++ b/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/pojo/vo/BomNewEbomParentVO.java
@@ -273,6 +273,9 @@ public class BomNewEbomParentVO extends BaseMaterialVO implements Serializable {
     @ApiModelProperty(value = "修改时间")
     private LocalDateTime modifyTime;
 
+    @ApiModelProperty("bom层级数")
+    private  BigDecimal levelNumber;
+
     private List<BomNewEbomParentVO> childNodes = Collections.emptyList();
 
     private static final long serialVersionUID = 1L;
diff --git a/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/service/domain/EBom/EBomToPBom.java b/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/service/domain/EBom/EBomToPBom.java
new file mode 100644
index 00000000..dcf945ff
--- /dev/null
+++ b/nflg_project_dev/nflg-bom-new/src/main/java/com/nflg/product/bomnew/service/domain/EBom/EBomToPBom.java
@@ -0,0 +1,61 @@
+package com.nflg.product.bomnew.service.domain.EBom;
+
+import cn.hutool.core.util.StrUtil;
+import com.nflg.product.bomnew.pojo.entity.BomNewEbomParentEntity;
+import com.nflg.product.bomnew.pojo.vo.BomNewEbomParentVO;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Ebom 转Pbom
+ */
+public class EBomToPBom {
+
+    private BomNewEbomParentVO parent;
+
+    private List<BomNewEbomParentVO> allBomDetail;
+
+
+    private Map<String, String> generateDrawingNoMap = new HashMap<>();
+
+
+    public EBomToPBom(BomNewEbomParentVO inParent, List<BomNewEbomParentVO> inAllBomDetail) {
+        this.parent = inParent;
+        this.allBomDetail = inAllBomDetail;
+    }
+
+
+    /**
+     * 生成 层级号
+     *
+     * @param saveBomDetailParamDTO
+     * @param bomRowID
+     * @param parentDrawingNo
+     */
+    private void generateDrawingNo(List<BomNewEbomParentVO> saveBomDetailParamDTO, Long bomRowID, String parentDrawingNo) {
+        List<BomNewEbomParentVO> firstLevelBoms = saveBomDetailParamDTO.stream().filter(u -> u.getBomRowId().equals(bomRowID)).collect(Collectors.toList());
+        parentDrawingNo = StrUtil.isNotBlank(parentDrawingNo) ? parentDrawingNo : "";
+        Integer gNo = 1;
+        for (BomNewEbomParentVO firstLevelBom : firstLevelBoms) {
+            String key = StrUtil.join("-", bomRowID.toString(), firstLevelBom.getMaterialNo());
+            if (generateDrawingNoMap.containsKey(key)) {
+               // firstLevelBom.setLevelNumber(generateDrawingNoMap.get(key));
+                continue;
+            }
+
+            firstLevelBom.setDrawingNo(StrUtil.isNotBlank(parentDrawingNo) ? StrUtil.join("-", parentDrawingNo, gNo.toString()) : gNo.toString());
+            gNo++;
+            generateDrawingNo(saveBomDetailParamDTO, firstLevelBom.getChildBomRowId(), firstLevelBom.getDrawingNo());
+
+            generateDrawingNoMap.put(key, firstLevelBom.getDrawingNo());
+
+
+        }
+
+    }
+
+
+}