diff --git a/DOAN.Model/MES/trace/Dto/TraceQueryDto.cs b/DOAN.Model/MES/trace/Dto/TraceQueryDto.cs
index 8aa93f8..4bdf6c2 100644
--- a/DOAN.Model/MES/trace/Dto/TraceQueryDto.cs
+++ b/DOAN.Model/MES/trace/Dto/TraceQueryDto.cs
@@ -17,7 +17,7 @@ namespace DOAN.Model.MES.trace.Dto
 
         public string ProjectCode { get; set; }
 
-        public string SubCode { get; set; }
+        public string SubPartScanCode { get; set; }
 
         public DateTime StartTime { get; set; }
 
diff --git a/DOAN.Service/MES/trace/TraceMainService.cs b/DOAN.Service/MES/trace/TraceMainService.cs
index 66d8d55..b359daa 100644
--- a/DOAN.Service/MES/trace/TraceMainService.cs
+++ b/DOAN.Service/MES/trace/TraceMainService.cs
@@ -8,6 +8,7 @@ using DOAN.Repository;
 using DOAN.Service.Business.IBusinessService;
 using Infrastructure.Attribute;
 using Infrastructure.Extensions;
+using Microsoft.IdentityModel.Tokens;
 using SqlSugar;
 using System;
 using System.ComponentModel.DataAnnotations;
@@ -32,17 +33,24 @@ namespace DOAN.Service
             {
                 throw new ArgumentNullException(nameof(query));
             }
+            if (!string.IsNullOrEmpty(query.SubPartScanCode))
+            {
+                var partSn = Context.Queryable<TraceSnSubScan>()
+                                     .Where(t => t.SubCode == query.SubPartScanCode)
+                                     .Select(t => t.PartSn)
+                                     .ToString();
+                query.PartSn = partSn;
+            }
             var response = Context.Queryable<TraceSnScan>()
                                   .LeftJoin<TraceProductRecord>((s, r) => s.PartSn == r.PartSn)
-                                  .LeftJoin<TraceSnSubScan>((s, r, t) => s.PartSn == t.PartSn)
-                                  .WhereIF(!string.IsNullOrEmpty(query.PartSn), (s, r, t) => s.PartSn == query.PartSn)
-                                  .WhereIF(!string.IsNullOrEmpty(query.ProductionSn), (s, r, t) => r.ProductionSn == query.ProductionSn)
-                                  .WhereIF(!string.IsNullOrEmpty(query.ProjectCode), (s, r, t) => s.ProjectCode == query.ProjectCode)
-                                  .WhereIF(!string.IsNullOrEmpty(query.SubCode), (s, r, t) => t.SubCode == query.SubCode)
-                                  .WhereIF(query.StartTime > DateTime.MinValue, (s, r, t) => s.CreateTime >= query.StartTime)
-                                  .WhereIF(query.EndTime > DateTime.MinValue, (s, r, t) => s.CreateTime >= query.EndTime)
-                                  .OrderByDescending((s, r, t) => s.CreateTime)
-                                  .Select((s, r, t) => new TracePartSnDto()
+                                  .WhereIF(!string.IsNullOrEmpty(query.PartSn), (s, r) => s.PartSn == query.PartSn)
+                                  .WhereIF(!string.IsNullOrEmpty(query.ProductionSn), (s, r) => r.ProductionSn == query.ProductionSn)
+                                  .WhereIF(!string.IsNullOrEmpty(query.ProjectCode), (s, r) => s.ProjectCode == query.ProjectCode)
+                                  .WhereIF(query.StartTime > DateTime.MinValue, (s, r) => s.CreateTime >= query.StartTime)
+                                  .WhereIF(query.EndTime > DateTime.MinValue, (s, r) => s.CreateTime >= query.EndTime)
+                                  .OrderByDescending((s, r) => s.CreateTime)
+                                  .GroupBy((s, r) => new { s.PartSn, r.ProductionSn })
+                                  .Select((s, r) => new TracePartSnDto()
                                   {
                                       Id = XueHua,
                                       ProjectCode = s.ProjectCode,
@@ -51,8 +59,8 @@ namespace DOAN.Service
                                       Specification = s.Specification,
                                       ProductionSn = r.ProductionSn,
                                       PartSN = s.PartSn,
-                                      Result =  r.Result,
-                                      CreateTime = (DateTime)r.CreateTime
+                                      Result = r.Result,
+                                      CreateTime = r.CreateTime != null ? (DateTime)r.CreateTime : (DateTime)s.CreateTime
                                   })
                                   .ToPage(query);
             return response;