diff --git a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/MesProWorkorderController.java b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/MesProWorkorderController.java
index 971eaf9..cbea09d 100644
--- a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/MesProWorkorderController.java
+++ b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/MesProWorkorderController.java
@@ -165,21 +165,23 @@ public class MesProWorkOrderController {
                 convertSet(list, MesProWorkOrderDO::getClientId));
         Map<Long, MesMdVendorDO> vendorMap = vendorService.getVendorMap(
                 convertSet(list, MesProWorkOrderDO::getVendorId));
+        // 单位从产品关联的 item 获得
         Map<Long, MesMdUnitMeasureDO> unitMeasureMap = unitMeasureService.getUnitMeasureMap(
-                convertSet(list, MesProWorkOrderDO::getUnitMeasureId));
+                convertSet(itemMap.values(), MesMdItemDO::getUnitMeasureId));
         Map<Long, MesProWorkOrderDO> parentMap = workOrderService.getWorkOrderMap(
                 convertSet(list, MesProWorkOrderDO::getParentId));
-        // 2. 拼接 VO
+        // 2. 拼接 VO（单位名称从产品关联的 item 获得）
         return BeanUtils.toBean(list, MesProWorkOrderRespVO.class, vo -> {
-            MapUtils.findAndThen(itemMap, vo.getProductId(), item ->
-                    vo.setProductName(item.getName()).setProductCode(item.getCode())
-                            .setProductSpec(item.getSpecification()));
+            MapUtils.findAndThen(itemMap, vo.getProductId(), item -> {
+                vo.setProductName(item.getName()).setProductCode(item.getCode())
+                        .setProductSpec(item.getSpecification());
+                MapUtils.findAndThen(unitMeasureMap, item.getUnitMeasureId(),
+                        unitMeasure -> vo.setUnitMeasureName(unitMeasure.getName()));
+            });
             MapUtils.findAndThen(clientMap, vo.getClientId(),
                     client -> vo.setClientName(client.getName()).setClientCode(client.getCode()));
             MapUtils.findAndThen(vendorMap, vo.getVendorId(),
                     vendor -> vo.setVendorName(vendor.getName()).setVendorCode(vendor.getCode()));
-            MapUtils.findAndThen(unitMeasureMap, vo.getUnitMeasureId(),
-                    unitMeasure -> vo.setUnitMeasureName(unitMeasure.getName()));
             MapUtils.findAndThen(parentMap, vo.getParentId(),
                     parent -> vo.setParentCode(parent.getCode()));
         });
diff --git a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderRespVO.java b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderRespVO.java
index 4a5f114..a42d36b 100644
--- a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderRespVO.java
+++ b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderRespVO.java
@@ -57,9 +57,6 @@ public class MesProWorkOrderRespVO {
     @ExcelProperty("规格型号")
     private String productSpec;
 
-    @Schema(description = "单位编号", example = "200")
-    private Long unitMeasureId;
-
     @Schema(description = "单位名称", example = "个")
     @ExcelProperty("单位")
     private String unitMeasureName;
diff --git a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderSaveReqVO.java b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderSaveReqVO.java
index aeb5f28..74de03b 100644
--- a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderSaveReqVO.java
+++ b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/controller/admin/pro/workorder/vo/MesProWorkorderSaveReqVO.java
@@ -38,10 +38,6 @@ public class MesProWorkOrderSaveReqVO {
     @NotNull(message = "产品不能为空")
     private Long productId;
 
-    @Schema(description = "单位编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "200")
-    @NotNull(message = "单位不能为空")
-    private Long unitMeasureId;
-
     @Schema(description = "生产数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "100.00")
     @NotNull(message = "生产数量不能为空")
     private BigDecimal quantity;
diff --git a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/dal/dataobject/pro/workorder/MesProWorkorderDO.java b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/dal/dataobject/pro/workorder/MesProWorkorderDO.java
index dd6152a..6ff101a 100644
--- a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/dal/dataobject/pro/workorder/MesProWorkorderDO.java
+++ b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/dal/dataobject/pro/workorder/MesProWorkorderDO.java
@@ -3,7 +3,6 @@ package cn.iocoder.yudao.module.mes.dal.dataobject.pro.workorder;
 import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
 import cn.iocoder.yudao.module.mes.dal.dataobject.md.client.MesMdClientDO;
 import cn.iocoder.yudao.module.mes.dal.dataobject.md.item.MesMdItemDO;
-import cn.iocoder.yudao.module.mes.dal.dataobject.md.unitmeasure.MesMdUnitMeasureDO;
 import cn.iocoder.yudao.module.mes.dal.dataobject.md.vendor.MesMdVendorDO;
 import cn.iocoder.yudao.module.mes.enums.pro.MesProWorkOrderSourceTypeEnum;
 import cn.iocoder.yudao.module.mes.enums.pro.MesProWorkOrderStatusEnum;
@@ -72,12 +71,6 @@ public class MesProWorkOrderDO extends BaseDO {
      */
     private Long productId;
     /**
-     * 单位编号
-     *
-     * 关联 {@link MesMdUnitMeasureDO#getId()}
-     */
-    private Long unitMeasureId;
-    /**
      * 生产数量
      */
     private BigDecimal quantity;
diff --git a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/service/pro/workorder/MesProWorkorderBomServiceImpl.java b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/service/pro/workorder/MesProWorkorderBomServiceImpl.java
index aa1f1c6..6bef776 100644
--- a/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/service/pro/workorder/MesProWorkorderBomServiceImpl.java
+++ b/yudao-module-mes/src/main/java/cn/iocoder/yudao/module/mes/service/pro/workorder/MesProWorkorderBomServiceImpl.java
@@ -2,7 +2,6 @@ package cn.iocoder.yudao.module.mes.service.pro.workorder;
 
 import cn.hutool.core.collection.CollUtil;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
-import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
 import cn.iocoder.yudao.module.mes.controller.admin.pro.workorder.vo.MesProWorkOrderSaveReqVO;
 import cn.iocoder.yudao.module.mes.controller.admin.pro.workorder.vo.bom.MesProWorkOrderBomPageReqVO;
@@ -18,9 +17,13 @@ import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.validation.annotation.Validated;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
 import static cn.iocoder.yudao.module.mes.enums.ErrorCodeConstants.MD_ITEM_NOT_EXISTS;
 import static cn.iocoder.yudao.module.mes.enums.ErrorCodeConstants.PRO_WORK_ORDER_BOM_NOT_EXISTS;
 
@@ -113,7 +116,7 @@ public class MesProWorkOrderBomServiceImpl implements MesProWorkOrderBomService 
             return;
         }
         // 2.2 批量获取并校验 BOM 物料
-        Set<Long> bomItemIds = CollectionUtils.convertSet(productBomList, MesMdProductBomDO::getBomItemId);
+        Set<Long> bomItemIds = convertSet(productBomList, MesMdProductBomDO::getBomItemId);
         Map<Long, MesMdItemDO> itemMap = itemService.getItemMap(bomItemIds);
         bomItemIds.forEach(itemId -> {
             if (itemMap.get(itemId) == null) {