diff --git a/lastleg-service/src/main/java/com/baiyue/lastleg/delivery/service/DeliveryTransferService.java b/lastleg-service/src/main/java/com/baiyue/lastleg/delivery/service/DeliveryTransferService.java
index 4b5349e75..46a1a9ed0 100644
--- a/lastleg-service/src/main/java/com/baiyue/lastleg/delivery/service/DeliveryTransferService.java
+++ b/lastleg-service/src/main/java/com/baiyue/lastleg/delivery/service/DeliveryTransferService.java
@@ -26,10 +26,13 @@ import com.baiyue.lastleg.entity.LastlegOrder;
 import com.baiyue.lastleg.entity.LastlegOrderStatusHistory;
 import com.baiyue.lastleg.entity.LastlegOrderDetail;
 import com.baiyue.lastleg.inboundplan.entity.InboundPlanLine;
+import com.baiyue.lastleg.inboundplan.entity.InboundPlanPallet;
 import com.baiyue.lastleg.inboundplan.entity.InboundPlanPalletAllocation;
 import com.baiyue.lastleg.inboundplan.mapper.InboundPlanLineMapper;
 import com.baiyue.lastleg.inboundplan.mapper.InboundPlanCartonMapper;
 import com.baiyue.lastleg.inboundplan.mapper.InboundPlanPalletAllocationMapper;
+import com.baiyue.lastleg.inboundplan.mapper.InboundPlanPalletMapper;
+import com.baiyue.lastleg.inboundplan.pda.gateway.WarehouseResourceGateway;
 import com.baiyue.lastleg.delivery.entity.OutboundPdaTask;
 import com.baiyue.lastleg.delivery.entity.OutboundPdaPick;
 import com.baiyue.lastleg.delivery.mapper.OutboundPdaTaskMapper;
@@ -107,6 +110,8 @@ public class DeliveryTransferService {
     @Resource private DropshipSkuInventoryMapper dropshipSkuInventory;
     @Resource private ReturnInventoryCartonMapper returnCartons;
     @Resource private InboundPlanPalletAllocationMapper planAllocations;
+    @Resource private InboundPlanPalletMapper inboundPlanPallets;
+    @Resource private WarehouseResourceGateway warehouseResources;
     @Resource private InboundPlanLineMapper planLines;
     @Resource private InboundPlanCartonMapper inboundCartons;
     @Resource private LastlegOrderMapper tailOrders;
@@ -930,9 +935,41 @@ public class DeliveryTransferService {
                 }
             }
         }
+        releaseEmptyOutboundPalletLocations(customerId, outbound.getOverseasWarehouseId(), items);
         return taskResult(outbound, task);
     }
 
+    /** Release the physical location only after the whole pallet has left inventory. */
+    private void releaseEmptyOutboundPalletLocations(String customerId, String warehouseId,
+                                                      List<OutboundPalletItem> items) {
+        if (!StringUtils.hasText(warehouseId)) return;
+        Set<Long> palletIds = items.stream().map(OutboundPalletItem::getWarehousePalletId)
+            .filter(Objects::nonNull).collect(Collectors.toCollection(LinkedHashSet::new));
+        for (Long palletId : palletIds) {
+            long remaining = inventoryPositions.listPallet(customerId, palletId).stream()
+                .filter(position -> warehouseId.equals(position.getOverseasWarehouseId()))
+                .mapToLong(position -> value(position.getAvailablePackages())
+                    + value(position.getHoldPackages()) + value(position.getAllocatedPackages())
+                    + value(position.getPickedPackages()) + value(position.getReceivingPackages()))
+                .sum();
+            if (remaining != 0) continue;
+            Long lockId = null;
+            WarehouseTransferPallet transferPallet = warehouseTransferPallets.selectOne(new LambdaQueryWrapper<WarehouseTransferPallet>()
+                .eq(WarehouseTransferPallet::getCustomerId, customerId)
+                .eq(WarehouseTransferPallet::getWarehousePalletId, palletId)
+                .last("LIMIT 1"));
+            if (transferPallet != null) lockId = transferPallet.getWarehouseResourceLockId();
+            if (lockId == null && inboundPlanPallets != null) {
+                InboundPlanPallet planPallet = inboundPlanPallets.selectOne(new LambdaQueryWrapper<InboundPlanPallet>()
+                    .eq(InboundPlanPallet::getCustomerId, customerId)
+                    .eq(InboundPlanPallet::getWarehousePalletId, palletId)
+                    .last("LIMIT 1"));
+                if (planPallet != null) lockId = planPallet.getWarehouseResourceLockId();
+            }
+            if (lockId != null) warehouseResources.release(customerId, lockId);
+        }
+    }
+
     @Transactional
     public void cancelOutbound(String outboundNo, DeliveryRequests.Cancel request) {
         OutboundOrder outbound = outboundOrders.lockGlobalByNo(trim(outboundNo));