diff --git a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoGroupService.cs b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoGroupService.cs
index ea35ff11..55df243d 100644
--- a/Src/Dlhis.Basic/Organization/Services/Implements/GainfoGroupService.cs
+++ b/Src/Dlhis.Basic/Organization/Services/Implements/GainfoGroupService.cs
@@ -53,7 +53,7 @@ public class GainfoGroupService : IGainfoGroupService
         {
             _dbContext.Client.QueryFilter.Restore();
         }
-       
+
 
         if (!request.Id.HasValue)
         {
@@ -86,6 +86,9 @@ public class GainfoGroupService : IGainfoGroupService
 
     public async Task AssignGainfosAsync(GainfoAssignRequest request)
     {
+        var existsNextGroup = await _dbContext.Queryable<GainfoGroupEntity>().Where(x => x.PCode == request.GroupCode).AnyAsync();
+        existsNextGroup.ThrowIfTrue("存在下级分组,无法分配人员");
+
         var relations = await _dbContext.Queryable<GainfoGroupRelationshipEntity>().Where(x => x.GroupCode == request.GroupCode).ToListAsync();
         await _dbContext.DeleteReallyAsync(relations);