diff --git a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
index 80d8627d..1834aa66 100644
--- a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
+++ b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
@@ -312,7 +312,7 @@ public class GainfoUpdateService : IGainfoUpdateService
                         {
                             try
                             {
-                                var resignationDate = DateOnly.FromDateTime(gainfo.ResignationDate!.Value);
+                                var resignationDate = DateOnly.FromDateTime(gainfo.ModifiedTime);
 
                                 var workGridSchedules = await _dbContext.Queryable<WorkGridScheduleEntity>().Where(x => x.UserCode == gainfo.Code)
                                     .Where(x => x.Date >= resignationDate)