diff --git a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoPermissionService.cs b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoPermissionService.cs
index 8cd92d19..59faaf26 100644
--- a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoPermissionService.cs
+++ b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoPermissionService.cs
@@ -8,7 +8,6 @@ using Dlhis.Entity.Device.Entities;
 using Dlhis.Entity.Device.Enums;
 using Dlhis.Entity.Sys.Enums;
 using Kurisu.AspNetCore.DataAccess.Dto;
-using Kurisu.AspNetCore.DataAccess.Extensions;
 using Kurisu.AspNetCore.DataAccess.SqlSugar.Extensions;
 using Kurisu.AspNetCore.DataAccess.SqlSugar.Services;
 using Kurisu.AspNetCore.Utils.Extensions;
diff --git a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
index 6a1b11bc..7d876177 100644
--- a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
+++ b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoUpdateService.cs
@@ -469,7 +469,7 @@ public class GainfoUpdateService : IGainfoUpdateService
         var lastMap = last
             .Where(x => !string.IsNullOrWhiteSpace(x.ZWORKCODE))
             .GroupBy(x => x.ZWORKCODE)
-            .ToDictionary(x => x.Key, x => x.ToList());
+            .ToDictionary(x => x.Key, x => x.First());
 
         var modifiedPersons = new List<SapPersonItem>();
         foreach (var person in sapList)
@@ -480,16 +480,14 @@ public class GainfoUpdateService : IGainfoUpdateService
                 continue;
             }
 
-            if (!lastMap.TryGetValue(person.ZWORKCODE, out var historyPersons) || historyPersons.Count <= 0)
+            if (!lastMap.TryGetValue(person.ZWORKCODE, out var latestHistory))
             {
                 modifiedPersons.Add(person);
                 continue;
             }
 
-            var exactHistory = historyPersons.FirstOrDefault(x => comparer.Equals(person, x));
-            if (exactHistory != null)
+            if (comparer.Equals(person, latestHistory))
             {
-                historyPersons.Remove(exactHistory);
                 continue;
             }
 
@@ -500,13 +498,13 @@ public class GainfoUpdateService : IGainfoUpdateService
         {
             var first = modifiedPersons[0];
             var historyCandidates = !string.IsNullOrWhiteSpace(first.ZWORKCODE)
-                && lastMap.TryGetValue(first.ZWORKCODE, out var currentHistoryPersons)
-                ? currentHistoryPersons
-                : new List<SapPersonItem>();
-            var hasHistory = historyCandidates.Count > 0;
+                && lastMap.TryGetValue(first.ZWORKCODE, out var currentHistoryPerson)
+                ? currentHistoryPerson
+                : null;
+            var hasHistory = historyCandidates != null;
             var diffType = hasHistory ? "Update" : "Insert";
             var diffMessage = hasHistory
-                ? string.Join("; ", GetFirstDiffFields(first, historyCandidates[0]))
+                ? string.Join("; ", GetFirstDiffFields(first, historyCandidates))
                 : "历史记录不存在";
             _logger.LogWarning("SAP首条差异 DiffType:{diffType}, ZWORKCODE:{workCode}, HasHistory:{hasHistory}, Diffs:{diffs}",
                 diffType, first.ZWORKCODE, hasHistory, diffMessage);
@@ -535,7 +533,13 @@ public class GainfoUpdateService : IGainfoUpdateService
             var items = await _dbContext.Queryable<GainfoSapEntity>()
                 .Where(x => chunk.Contains(x.ename))
                 .ToListAsync();
-            gainfos.AddRange(items);
+            var latestItems = items
+                .OrderByDescending(x => x.logdate)
+                .ThenByDescending(x => x.id)
+                .GroupBy(x => x.ename)
+                .Select(x => x.First())
+                .ToList();
+            gainfos.AddRange(latestItems);
         }
 
         return gainfos.Select(ToSapPersonItem).ToList();