diff --git a/DOAN.Service/MES/product/ProWorkorderService.cs b/DOAN.Service/MES/product/ProWorkorderService.cs
index cb38ab8..5d2d0ed 100644
--- a/DOAN.Service/MES/product/ProWorkorderService.cs
+++ b/DOAN.Service/MES/product/ProWorkorderService.cs
@@ -159,11 +159,19 @@ namespace DOAN.Service.MES.product
             List<ProWorkorder> proWorkorderList = Context.Queryable<ProWorkorder>().Where(it => it.WorkorderDate == update_time)
                   .Where(it => it.Status == 1)
                  .OrderBy(it => it.Sort).ToList();
-
+           string maxs= Context.Queryable<ProWorkorder>().Where(it => it.WorkorderDate == update_time)
+                  .Where(it => it.Status == 3).Max(it => it.Workorder);
             if (proWorkorderList != null && proWorkorderList.Count() > 0)
             {
+                
                 string baseSort = update_time.ToString("yyyyMMdd");
                 int index = 1;
+                if (!string.IsNullOrEmpty(maxs))
+                {
+                    index = Convert.ToInt32(maxs.Substring(maxs.Length - 3))+1;
+
+                }
+              
                 foreach (ProWorkorder item in proWorkorderList)
                 {
                     item.Workorder = baseSort + index.ToString("000");