diff --git a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/EducationalAdministration/ArrangeLessonTermOfElective/ArrangeLessonTermOfElectiveService.cs b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/EducationalAdministration/ArrangeLessonTermOfElective/ArrangeLessonTermOfElectiveService.cs
index cf01e049b..5ffeabf2c 100644
--- a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/EducationalAdministration/ArrangeLessonTermOfElective/ArrangeLessonTermOfElectiveService.cs	
+++ b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/EducationalAdministration/ArrangeLessonTermOfElective/ArrangeLessonTermOfElectiveService.cs	
@@ -191,6 +191,9 @@ namespace Learun.Application.TwoDevelopment.EducationalAdministration
                         //ArrangeLessonTermOfElective数据处理
                         var insertDataList = new List<ArrangeLessonTermOfElectiveEntity>();
                         var lessonData = (await BaseRepository("CollegeMIS").FindListAsync<LessonInfoEntity>()).ToList();
+                        var oldArrangeLessonTermOfElectiveDataList = BaseRepository("CollegeMIS")
+                            .FindList<ArrangeLessonTermOfElectiveEntity>(m => m.F_SchoolId == entity.F_SchoolId
+                                                                            && m.AcademicYearNo == entity.AcademicYearNo && m.Semester == entity.Semester).ToList();
                         foreach (var item in dataList)
                         {
                             if (!string.IsNullOrEmpty(item.paike.timeText))
@@ -217,7 +220,13 @@ namespace Learun.Application.TwoDevelopment.EducationalAdministration
                                         F_SchoolId = entity.F_SchoolId,
                                         CheckMark = "1"
                                     };
-                                    insertDataList.Add(insertData);
+                                    if (oldArrangeLessonTermOfElectiveDataList.Count(m => m.AcademicYearNo == insertData.AcademicYearNo
+                                                                                        && m.Semester == insertData.Semester && m.LessonNo == insertData.LessonNo
+                                                                                        && m.LessonSection == insertData.LessonSection && m.EmpNo == insertData.EmpNo
+                                                                                        && m.ClassRoomNo == insertData.ClassRoomNo) == 0)
+                                    {
+                                        insertDataList.Add(insertData);
+                                    }
                                 }
                             }