diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/cailiaoshebei/service/impl/BusPurchaseDocServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/cailiaoshebei/service/impl/BusPurchaseDocServiceImpl.java
index 11af841a..7fb9ce1a 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/cailiaoshebei/service/impl/BusPurchaseDocServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/cailiaoshebei/service/impl/BusPurchaseDocServiceImpl.java
@@ -210,11 +210,10 @@ public class BusPurchaseDocServiceImpl extends ServiceImpl<BusPurchaseDocMapper,
         BusPurchaseDoc update = MapstructUtils.convert(bo, BusPurchaseDoc.class);
         validEntityBeforeSave(update);
 
-        planDocAssociationService.remove(Wrappers.<BusPlanDocAssociation>lambdaQuery()
-            .eq(BusPlanDocAssociation::getProjectId, update.getProjectId())
-            .eq(BusPlanDocAssociation::getDocId, update.getId()));
-
         if (CollectionUtil.isNotEmpty(bo.getAssociationList())) {
+            planDocAssociationService.remove(Wrappers.<BusPlanDocAssociation>lambdaQuery()
+                .eq(BusPlanDocAssociation::getProjectId, update.getProjectId())
+                .eq(BusPlanDocAssociation::getDocId, update.getId()));
             List<BusPlanDocAssociation> convert = MapstructUtils.convert(bo.getAssociationList(), BusPlanDocAssociation.class);
             convert.forEach(item -> {
                 item.setProjectId(update.getProjectId());
@@ -505,6 +504,7 @@ public class BusPurchaseDocServiceImpl extends ServiceImpl<BusPurchaseDocMapper,
                 BeanUtils.copyProperties(item, itemDto);
                 itemDto.setNum(i);
                 itemDto.setChildName(item.getName());
+                itemDto.setDemandQuantity(item.getDemandQuantity() != null ? item.getDemandQuantity().longValue() : null);
                 dtoItems.add(itemDto);
             }
             dto.setItems(dtoItems);