diff --git a/Learn.Archives.API/Controllers/ExamClassInfoController.cs b/Learn.Archives.API/Controllers/ExamClassInfoController.cs
index 9eb9741..ed75abf 100644
--- a/Learn.Archives.API/Controllers/ExamClassInfoController.cs
+++ b/Learn.Archives.API/Controllers/ExamClassInfoController.cs
@@ -1,6 +1,7 @@
 using Learn.Archives.API.Controllers.Dto;
 using Learn.Archives.API.Expand;
 using Learn.Archives.Core.Common;
+using Learn.Archives.Core.Common.Expand;
 using Learn.Archives.Core.Model;
 using Learn.Archives.Core.Model.Dto;
 using Microsoft.AspNetCore.Authorization;
@@ -84,6 +85,7 @@ namespace Learn.Archives.API.Controllers
             var insertUserInfo = new List<ExamUserInfo>();
             var insertClassInfo = new List<ExamClassInfo>();
             var db = schoolService.Context;
+            SqlSugarExpand.SetDbAop(db);
             foreach (var schoolArr in dataList.GroupBy(s => s.School))
             {
                 var school = await schoolService.GetFirstAsync(s => s.Name == schoolArr.Key);
@@ -94,6 +96,7 @@ namespace Learn.Archives.API.Controllers
                 var classArr = await db.Queryable<Classes>().Where(c => c.SchoolId == school.Id &&
                         c.GradeLevel == gradeInfo.GradeLevel &&
                         c.GraduationYear == gradeInfo.GradeYear && !c.DeleteState).ToArrayAsync();
+                
                 var userDic = await db.Queryable<School>()
                     .LeftJoin<Classes>((s, c) => c.SchoolId == s.Id)
                     .LeftJoin<Position>((s, c, p) => p.ClassId == c.Id)
@@ -103,6 +106,7 @@ namespace Learn.Archives.API.Controllers
                         s.Id == school.Id &&
                         c.GradeLevel == gradeInfo.GradeLevel &&
                         c.GraduationYear == gradeInfo.GradeYear &&
+                        u.UserType == UserTypeEnum.学生.GetHashCode() &&
                         s.Enable && p.Enable && pr.Enable &&
                         !p.DeleteState && !c.DeleteState && !u.DeleteState  && !s.DeleteState)
                     .Select((s, c, p, pr, u) => new
diff --git a/Learn.Archives.API/Controllers/StudentController.cs b/Learn.Archives.API/Controllers/StudentController.cs
index c3ab5dc..60a9b1f 100644
--- a/Learn.Archives.API/Controllers/StudentController.cs
+++ b/Learn.Archives.API/Controllers/StudentController.cs
@@ -103,7 +103,7 @@ namespace Learn.Archives.API.Controllers
                 item.AmountRelief = ex.AmountRelief;
                 item.ReliefApplication = ex.ReliefApplication;
                 item.Remark = ex.Remark;
-                item.ReliefType = ex.ReliefType.ToString();
+                item.ReliefType = ex?.ReliefType?.ToString();
                 item.ReliefSubTime = ex.ReliefSubTime?.ToString("yyyy-MM-dd") ?? string.Empty;
 
             }
@@ -209,7 +209,7 @@ namespace Learn.Archives.API.Controllers
                     UserCenterId = s.Id,
                     ReliefApplication=s.ReliefApplication?.Contains("已申请")??false,
                     ReliefSubTime = s.ReliefSubTime,
-                    ReliefType  =s.ReliefType?.ToEnum<ReliefSubTimeEnum>()
+                    ReliefType  =s.ReliefType,
                 });
                 userCenterImp.Add(new UserExcelExportData()
                 {
diff --git a/Learn.Archives.Core/Model/Enum/ReliefSubTimeEnum.cs b/Learn.Archives.Core/Model/Enum/ReliefSubTimeEnum.cs
deleted file mode 100644
index 4f7815a..0000000
--- a/Learn.Archives.Core/Model/Enum/ReliefSubTimeEnum.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Learn.Archives.Core.Model.Enum
-{
-    /// <summary>
-    /// 学生减免类型
-    /// </summary>
-    public enum ReliefSubTimeEnum
-    {
-        低保户 = 10,
-        教师子女 = 20,
-        孤儿 = 30,
-        艺体生 = 40,
-        残疾学生 = 50,
-        领导特殊承诺减免 = 60,
-        领导同意的特殊贫困减免 = 70,
-        建卡贫困户 = 80,
-    }
-}
diff --git a/Learn.Archives.Core/Model/Student.cs b/Learn.Archives.Core/Model/Student.cs
index 5791ec4..81c5618 100644
--- a/Learn.Archives.Core/Model/Student.cs
+++ b/Learn.Archives.Core/Model/Student.cs
@@ -34,8 +34,8 @@ namespace Learn.Archives.Core.Model
         /// <summary>
         /// 减免申请类型
         /// </summary>
-        [SugarColumn(IsNullable = true)]
-        public ReliefSubTimeEnum? ReliefType { get; set; }
+        [SugarColumn(IsNullable = true, Length = 20)]
+        public string? ReliefType { get; set; }
         /// <summary>
         /// 减免申请时间
         /// </summary>