diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
index 64ed1d4a4..9aa9bc53e 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
@@ -144,7 +144,12 @@ public class ReserveOutMaterialDetailImpl extends ServiceImpl<ReserveOutMaterial
             ReserveOutMaterialDetail outMaterialDetail = new ReserveOutMaterialDetail();
             BeanUtils.copyProperties(outMaterialDetailDO, outMaterialDetail);
             BigDecimal allocationQuantity = outMaterialDetail.getAllocationQuantity();
-            outMaterialDetail.setStockQuantity(allocationQuantity);
+            BigDecimal stockQuantity = outMaterialDetail.getStockQuantity();
+            if (allocationQuantity != null && (stockQuantity == null || stockQuantity.compareTo(BigDecimal.ZERO) == 0))
+            {
+                outMaterialDetail.setStockQuantity(allocationQuantity);
+            }
+
             outMaterialDetail.setAllocationQuantity(BigDecimal.ZERO);
             outMaterialDetail.setUniqueId(idGenerator.snowflakeId(SnowFlakeConstants.wmsId));
             outMaterialDetail.setOutOrderNumber(outOrderNumber);