diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
index aada73d53..bde5e11a3 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
@@ -409,7 +409,7 @@ public class ReservationStockOutOrderDomainService {
         String userRealName = loginUser.getUserPo() != null && loginUser.getUserPo().getUserName() != null
                 ? loginUser.getUserPo().getUserName()
                 : (loginUser.getRealname() != null ? loginUser.getRealname() : loginUser.getUsername());
-        return stockOutOrderService.update(null, new UpdateWrapper<ReservationStockOutOrder>().lambda()
+        boolean updateResult = stockOutOrderService.update(null, new UpdateWrapper<ReservationStockOutOrder>().lambda()
                 .set(ReservationStockOutOrder::getReservationAuditId, loginUser.getUserid())
                 .set(ReservationStockOutOrder::getReservationAuditName, userRealName)
                 .set(ReservationStockOutOrder::getReservationAuditTime, new Date())
@@ -418,6 +418,67 @@ public class ReservationStockOutOrderDomainService {
                 .set(ReservationStockOutOrder::getUpdateTime, new Date())
                 .set(ReservationStockOutOrder::getIssueStatus, issueStatus)
                 .in(ReservationStockOutOrder::getOutOrderId, stockOutOrderDO.getOutOrderIds()));
+
+        //审核通过时同步线路/车次到关联的运输业务单
+        if (issueStatus == 2) {
+            syncLineInfoToBusinessOrder(stockOutOrderDO.getOutOrderIds());
+        }
+        return updateResult;
+    }
+
+    /**
+     * 将出库业务单的线路/车次同步到关联的运输业务单(审核通过/下发/执行并下发时触发):
+     * 关联链路 出库单号->reservation_delivery_details_link.invoiceNumber
+     *          ->business_delivery_details_link.invoiceNumber->orderId(主单/未拆单)/subOrderId(拆单子单)
+     * 出库业务单与运输业务单为两张独立表,此前无字段同步逻辑,线路车次以出库业务单为源头覆盖;
+     * 同步失败仅记日志,不阻断主流程。
+     */
+    private void syncLineInfoToBusinessOrder(List<Long> outOrderIds) {
+        try {
+            for (Long outOrderId : outOrderIds) {
+                ReservationStockOutOrder byId = stockOutOrderService.getById(outOrderId);
+                if (byId == null || StringUtils.isBlank(byId.getLineCode())) {
+                    continue;
+                }
+                List<ReservationDeliveryDetailsLink> deliveryLinks = reservationDeliveryDetailsLinkService.list(
+                        new LambdaQueryWrapper<ReservationDeliveryDetailsLink>()
+                                .eq(ReservationDeliveryDetailsLink::getOrderNumber, byId.getOutOrderNumber()));
+                Set<String> syncedBusinessOrderIds = new HashSet<>();
+                for (ReservationDeliveryDetailsLink deliveryLink : deliveryLinks) {
+                    if (StringUtils.isBlank(deliveryLink.getInvoiceNumber())) {
+                        continue;
+                    }
+                    List<BusinessDeliveryDetailsLink> businessLinks = businessDeliveryDetailsLinkService.list(
+                            new LambdaQueryWrapper<BusinessDeliveryDetailsLink>()
+                                    .eq(BusinessDeliveryDetailsLink::getInvoiceNumber, deliveryLink.getInvoiceNumber()));
+                    //未拆单时orderId即运输业务单本身;拆单后orderId为主单、subOrderId为子单,两者均同步
+                    //(若只同步subOrderId,出库业务单先于运输业务单拆单时subOrderId为空,同步落空,
+                    // 且主单无值导致后续拆单子单也拷贝不到)
+                    for (BusinessDeliveryDetailsLink businessLink : businessLinks) {
+                        for (Object bizOrderIdObj : new Object[]{businessLink.getOrderId(), businessLink.getSubOrderId()}) {
+                            if (bizOrderIdObj == null) {
+                                continue;
+                            }
+                            String bizOrderId = String.valueOf(bizOrderIdObj);
+                            if (!syncedBusinessOrderIds.add(bizOrderId)) {
+                                continue;
+                            }
+                            BusinessDocumentOrder businessOrder = businessDocumentOrderMapper.selectOne(
+                                    new LambdaQueryWrapper<BusinessDocumentOrder>()
+                                            .eq(BusinessDocumentOrder::getId, bizOrderId));
+                            if (businessOrder != null) {
+                                businessOrder.setLineCode(byId.getLineCode());
+                                businessOrder.setLineName(byId.getLineName());
+                                businessOrder.setShuttleNo(byId.getShuttleNo());
+                                businessDocumentOrderMapper.updateById(businessOrder);
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (Exception e) {
+            log.error("同步线路/车次到运输业务单失败, outOrderIds={}, error={}", outOrderIds, e.getMessage(), e);
+        }
     }
 
     /**
@@ -444,6 +505,9 @@ public class ReservationStockOutOrderDomainService {
                 .set(ReservationStockOutOrder::getUpdateTime, new Date())
                 .in(ReservationStockOutOrder::getOutOrderId, stockOutOrderDO.getOutOrderIds()));
 
+        //下发时同步线路/车次到关联的运输业务单(与审核通过触发同一同步,覆盖式)
+        syncLineInfoToBusinessOrder(stockOutOrderDO.getOutOrderIds());
+
         //todo下发推送到wms
         List<Long> inOrderIds = stockOutOrderDO.getOutOrderIds();
 
@@ -608,6 +672,9 @@ public class ReservationStockOutOrderDomainService {
                 .set(ReservationStockOutOrder::getUpdateTime, new Date())
                 .in(ReservationStockOutOrder::getOutOrderId, stockOutOrderDO.getOutOrderIds()));
 
+        //下发时同步线路/车次到关联的运输业务单(与审核通过触发同一同步,覆盖式)
+        syncLineInfoToBusinessOrder(stockOutOrderDO.getOutOrderIds());
+
         //todo下发推送到wms
         List<Long> inOrderIds = stockOutOrderDO.getOutOrderIds();