diff --git a/mhd_wms/src/main/java/com/mhd/wms/domain/outMaterialDetail/repository/persistence/OutMaterialDetailImpl.java b/mhd_wms/src/main/java/com/mhd/wms/domain/outMaterialDetail/repository/persistence/OutMaterialDetailImpl.java
index 24f29b343..f388094f4 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/domain/outMaterialDetail/repository/persistence/OutMaterialDetailImpl.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/domain/outMaterialDetail/repository/persistence/OutMaterialDetailImpl.java
@@ -307,6 +307,8 @@ public class OutMaterialDetailImpl extends ServiceImpl<OutMaterialDetailMapper,
             }
             if (CollectionUtil.isNotEmpty(outMaterialDetailListChild)){
                 outMaterialDetailList.addAll(outMaterialDetailListChild);
+                // 有子项时，父项不参与库存扣减，避免父项+子项重复扣减导致数量翻倍（子项已代表实际分配）
+                outMaterialDetail.setNowAllocationQuantity(BigDecimal.ZERO);
             }
             //记录收货单收货总数
             totalAllocationQuantity = totalAllocationQuantity.add(outMaterialDetail.getAlreadyAllocationQuantity());
@@ -433,7 +435,7 @@ public class OutMaterialDetailImpl extends ServiceImpl<OutMaterialDetailMapper,
         StockOutOrder stockOutOrder = stockOutOrderMapper.selectOne(new QueryWrapper<StockOutOrder>().lambda().eq(StockOutOrder::getOutOrderNumber, outOrderNumber));
         for (OutMaterialDetail outMaterialDetail : outMaterialDetailList) {
             BigDecimal nowAllocationQuantity = outMaterialDetail.getNowAllocationQuantity();
-            if (nowAllocationQuantity == null && nowAllocationQuantity.compareTo(BigDecimal.ZERO) <= 0) {
+            if (nowAllocationQuantity == null || nowAllocationQuantity.compareTo(BigDecimal.ZERO) <= 0) {
                 continue;
             }
             Long materialInventoryId = outMaterialDetail.getMaterialInventoryId();
@@ -524,7 +526,7 @@ public class OutMaterialDetailImpl extends ServiceImpl<OutMaterialDetailMapper,
         StockOutOrder stockOutOrder = stockOutOrderMapper.selectOne(new QueryWrapper<StockOutOrder>().lambda().eq(StockOutOrder::getOutOrderNumber, outOrderNumber));
         for (OutMaterialDetail outMaterialDetail : outMaterialDetailList) {
             BigDecimal nowAllocationQuantity = outMaterialDetail.getNowAllocationQuantity();
-            if (nowAllocationQuantity == null && nowAllocationQuantity.compareTo(BigDecimal.ZERO) <= 0) {
+            if (nowAllocationQuantity == null || nowAllocationQuantity.compareTo(BigDecimal.ZERO) <= 0) {
                 continue;
             }
             Long materialInventoryId = outMaterialDetail.getMaterialInventoryId();