diff --git a/be/Modules/BaseData/src/Win_in.Sfs.Basedata.Domain/SplitPackings/SplitPackingRecManager.cs b/be/Modules/BaseData/src/Win_in.Sfs.Basedata.Domain/SplitPackings/SplitPackingRecManager.cs
index 04916ad6d..994c5308e 100644
--- a/be/Modules/BaseData/src/Win_in.Sfs.Basedata.Domain/SplitPackings/SplitPackingRecManager.cs
+++ b/be/Modules/BaseData/src/Win_in.Sfs.Basedata.Domain/SplitPackings/SplitPackingRecManager.cs
@@ -42,14 +42,6 @@ public class SplitPackingRecManager : DomainService, ISplitPackingRecManager
                 {
                     throw new UserFriendlyException("操作类型不是拆箱或合箱状态，源箱码和目标箱码必须相同！");
                 }
-                if (item.FromTopPackingCode.IsNullOrEmpty())
-                {
-                    item.FromTopPackingCode = item.FromPackingCode;
-                }
-                if (item.ToTopPackingCode.IsNullOrEmpty())
-                {
-                    item.ToTopPackingCode = item.FromPackingCode;// ToPackingCode;
-                }
             }
             #endregion
 
@@ -91,6 +83,14 @@ public class SplitPackingRecManager : DomainService, ISplitPackingRecManager
             }
             else
             {
+                if (item.FromTopPackingCode.IsNullOrEmpty())
+                {
+                    item.FromTopPackingCode = item.FromPackingCode;
+                }
+                if (item.ToTopPackingCode.IsNullOrEmpty())
+                {
+                    item.ToTopPackingCode = item.FromPackingCode;// ToPackingCode;
+                }
                 SplitPackingRec newEntity = CommonHelper.CloneObj(item);
                 newEntity.SetId(GuidGenerator.Create());
                 var ret = await _repository.InsertAsync(newEntity, true).ConfigureAwait(false);
@@ -202,24 +202,42 @@ public class SplitPackingRecManager : DomainService, ISplitPackingRecManager
     /// 取顶级箱码
     /// </summary>
     /// <param name="historyQuery">箱码历史</param>
-    /// <param name="item">当前箱码</param>
+    /// <param name="packingCode">箱码，from to时都传入from</param>
     /// <returns></returns>
     private static string GetTopPackingCode(IQueryable<SplitPackingRec> historyQuery, string packingCode)
     {
-        var historyRec = historyQuery.Where(itm => itm.FromPackingCode == packingCode).OrderBy(itm => itm.CreationTime).FirstOrDefault();
-        if (historyRec != null)
-        {
-            return historyRec.FromTopPackingCode;
-        }
-        else
+        var qry = historyQuery.Where(itm => itm.OprType == OprTypeEnum.SplitBox || itm.OprType == OprTypeEnum.MergeBox);
+        string ret = null;
+        SplitPackingRec? firstObj = null;
+        string toCode = packingCode;
+        while (1 == 1)
         {
-            historyRec = historyQuery.Where(itm => itm.ToPackingCode == packingCode).OrderBy(itm => itm.CreationTime).FirstOrDefault();
-            if (historyRec != null)
+            firstObj = qry.FirstOrDefault(itm => itm.ToPackingCode == toCode);
+            if (firstObj == null)
+            {
+                ret = toCode;
+                break;
+            }
+            else
             {
-                return historyRec.ToTopPackingCode;
+                toCode = firstObj.FromPackingCode;
             }
         }
-        return null;
+        return ret;
+        //var historyRec = historyQuery.Where(itm => itm.FromPackingCode == packingCode).OrderBy(itm => itm.CreationTime).FirstOrDefault();
+        //if (historyRec != null)
+        //{
+        //    return historyRec.FromTopPackingCode;
+        //}
+        //else
+        //{
+        //    historyRec = historyQuery.Where(itm => itm.ToPackingCode == packingCode).OrderBy(itm => itm.CreationTime).FirstOrDefault();
+        //    if (historyRec != null)
+        //    {
+        //        return historyRec.ToTopPackingCode;
+        //    }
+        //}
+        //return null;
     }
 
     private static void SetBillNumber(IQueryable<SplitPackingRec> historyQuery, SplitPackingRec obj)
diff --git a/be/Modules/Store/src/Win_in.Sfs.Wms.Store.Application/Requests/PurchaseReceiptRequests/PurchaseReceiptRequestAppService.cs b/be/Modules/Store/src/Win_in.Sfs.Wms.Store.Application/Requests/PurchaseReceiptRequests/PurchaseReceiptRequestAppService.cs
index 1bfe1c39d..37ac275c1 100644
--- a/be/Modules/Store/src/Win_in.Sfs.Wms.Store.Application/Requests/PurchaseReceiptRequests/PurchaseReceiptRequestAppService.cs
+++ b/be/Modules/Store/src/Win_in.Sfs.Wms.Store.Application/Requests/PurchaseReceiptRequests/PurchaseReceiptRequestAppService.cs
@@ -9,7 +9,6 @@ using Volo.Abp.Domain.Entities;
 using Volo.Abp.ObjectMapping;
 using Volo.Abp.Uow;
 using Win_in.Sfs.Basedata.Application.Contracts;
-using Win_in.Sfs.Basedata.Domain;
 using Win_in.Sfs.Basedata.Domain.Shared;
 using Win_in.Sfs.Label.Application.Contracts;
 using Win_in.Sfs.Shared.Domain.Shared;
@@ -31,20 +30,20 @@ public class PurchaseReceiptRequestAppService :
 {
     private readonly IPurchaseReceiptRequestManager _purchaseReceiptRequestManager;
 
-    private readonly ISplitPackingRecManager _splitPackingRecManager;
+    private readonly ISplitPackingRecAppService _splitPackingRecAppService;
     
 
     public PurchaseReceiptRequestAppService(
         IPurchaseReceiptRequestRepository repository,
         IPurchaseReceiptRequestManager purchaseReceiptRequestManager,
-        ISplitPackingRecManager splitPackingRecManager) : base(repository, purchaseReceiptRequestManager)
+        ISplitPackingRecAppService splitPackingRecAppService) : base(repository, purchaseReceiptRequestManager)
     {
         _purchaseReceiptRequestManager = purchaseReceiptRequestManager;
 
         base.CreatePolicyName = PurchaseReceiptRequestPermissions.Create;
         base.UpdatePolicyName = PurchaseReceiptRequestPermissions.Update;
         base.DeletePolicyName = PurchaseReceiptRequestPermissions.Delete;
-        _splitPackingRecManager = splitPackingRecManager;
+        _splitPackingRecAppService = splitPackingRecAppService;
     }
 
     #region 东阳使用
@@ -103,7 +102,7 @@ public class PurchaseReceiptRequestAppService :
     public virtual async Task<PurchaseReceiptRequestDetailDTO> GetDetailByItemAndRootPackingAsync(string itemCode,
         string packingCode)
     {
-        var topObj = await _splitPackingRecManager.GetTopPackingCode(packingCode).ConfigureAwait(false);
+        var topObj = await _splitPackingRecAppService.GetTopPackingCode(packingCode).ConfigureAwait(false);
         if (topObj == null || string.IsNullOrEmpty(topObj.ToTopPackingCode))
         {
             throw new UserFriendlyException($"根据箱码{packingCode}到拆箱记录表中没有取到顶级箱码！");