diff --git a/VOL.Ai/Services/AiAppService.cs b/VOL.Ai/Services/AiAppService.cs
index 710c8d5..3ad1810 100644
--- a/VOL.Ai/Services/AiAppService.cs
+++ b/VOL.Ai/Services/AiAppService.cs
@@ -1,4 +1,5 @@
 using AutoMapper;
+using EFCore.BulkExtensions;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
@@ -253,7 +254,7 @@ namespace VOL.Ai.Services
                 .ToListAsync();
 
             res.Grade = dbGrades
-                .Where(g => g.Classes != null && g.Classes.Any()) 
+                .Where(g => g.Classes != null && g.Classes.Any())
                 .Select(g => new Grades
                 {
                     Id = (int)g.Id,
@@ -1520,6 +1521,25 @@ namespace VOL.Ai.Services
             if (teacher == null || string.IsNullOrWhiteSpace(teacher.TeacherNo) || string.IsNullOrWhiteSpace(teacher.TeacherName))
                 throw new Exception("获取京师老师信息失败!");
 
+            // 2️⃣ 查询数据库中是否已有该老师
+            var dbTeacher = await _teacherRepository.DbContext.Set<JS_Teacher>()
+                .FirstOrDefaultAsync(t => t.TeacherNo == teacher.TeacherNo);
+
+            if (dbTeacher == null)
+            {
+                // 老师不存在，新增
+                dbTeacher = new JS_Teacher
+                {
+                    TeacherNo = teacher.TeacherNo,
+                    TeacherName = teacher.TeacherName,
+                    SchoolCode = paramDto.SchoolCode,
+                    Code = paramDto.Code
+                };
+
+                await _teacherRepository.DbContext.Set<JS_Teacher>().AddAsync(dbTeacher);
+                await _teacherRepository.DbContext.SaveChangesAsync(); 
+            }
+
             var gradeDtos = teacher.GradeList ?? new List<GradeDto>();
             var allGradeNos = gradeDtos.Where(g => !string.IsNullOrWhiteSpace(g.GradeNo))
                                        .Select(g => g.GradeNo)
@@ -1531,18 +1551,29 @@ namespace VOL.Ai.Services
                 .Include(g => g.Classes)
                 .ToListAsync();
 
-            // 4️⃣ 更新已存在的年级老师信息（直接 UPDATE）
-            foreach (var grade in existGrades)
-            {
-                grade.TeacherNo = teacher.TeacherNo;
-                grade.TeacherName = teacher.TeacherName;
+            var existClasses = existGrades.SelectMany(g => g.Classes).ToList();
 
-                foreach (var cls in grade.Classes)
-                {
-                    cls.TeacherNo = teacher.TeacherNo;
-                    cls.TeacherName = teacher.TeacherName;
-                }
-            }
+            // 先删班级
+            _studentRepository.DbContext.Set<JS_Class>().RemoveRange(existClasses);
+
+            // 再删年级
+            _studentRepository.DbContext.Set<JS_Grade>().RemoveRange(existGrades);
+
+            await _studentRepository.DbContext.SaveChangesAsync();
+
+
+            // 4️⃣ 更新已存在的年级老师信息（直接 UPDATE）
+            //foreach (var grade in existGrades)
+            //{
+            //    grade.TeacherNo = teacher.TeacherNo;
+            //    grade.TeacherName = teacher.TeacherName;
+
+            //    foreach (var cls in grade.Classes)
+            //    {
+            //        cls.TeacherNo = teacher.TeacherNo;
+            //        cls.TeacherName = teacher.TeacherName;
+            //    }
+            //}
 
             // 5️⃣ 构造新增年级和班级
             var newGrades = new List<JS_Grade>();
@@ -1584,12 +1615,12 @@ namespace VOL.Ai.Services
 
             // 6️⃣ 保存所有修改和新增
 
-            // EF Core 显式标记更新
-            _studentRepository.UpdateRange(existGrades);
+            //// EF Core 显式标记更新
+            //_studentRepository.UpdateRange(existGrades);
 
-            // 同时更新所有班级（必须显式）
-            var allClasses = existGrades.SelectMany(g => g.Classes).ToList();
-            _classRepository.UpdateRange(allClasses);
+            //// 同时更新所有班级（必须显式）
+            //var allClasses = existGrades.SelectMany(g => g.Classes).ToList();
+            //_classRepository.UpdateRange(allClasses);
 
             await _studentRepository.DbContext.SaveChangesAsync();
 
@@ -1601,7 +1632,7 @@ namespace VOL.Ai.Services
 
             var res = new Ai_TeacherFaceInfo
             {
-                Id = 0,
+                Id = (int)dbTeacher.Id,
                 TeacherName = teacher.TeacherName,
                 Phone = teacher.TeacherNo,
                 GradeAndClassList = dbGrades
@@ -1614,6 +1645,31 @@ namespace VOL.Ai.Services
                     .ToList()
             };
 
+
+            //// 3️⃣ 直接从 teacher 里组装年级班级数据（不进数据库）
+            //var gradeDtos = teacher.GradeList ?? new List<GradeDto>();
+
+            //var classList = gradeDtos
+            //    .Where(g => !string.IsNullOrWhiteSpace(g.GradeNo))
+            //    .SelectMany(g => g.ClassList ?? new List<ClassDto>(),
+            //        (g, c) => new { g, c })
+            //    .Where(x => !string.IsNullOrWhiteSpace(x.c.ClassNo))
+            //    .Select(x => new Classes
+            //    {
+            //        Id = 0, // 不落库，Id 没意义
+            //        Name = $"{x.g.GradeName}-{x.c.ClassName}"
+            //    })
+            //    .ToList();
+
+            //// 4️⃣ 返回结果
+            //var res = new Ai_TeacherFaceInfo
+            //{
+            //    Id = 0,
+            //    TeacherName = teacher.TeacherName,
+            //    Phone = teacher.TeacherNo,
+            //    GradeAndClassList = classList
+            //};
+
             // 8️⃣ 删除扫码记录
             _scanCodeLoginRepository.Delete(loginInfo);
             await _scanCodeLoginRepository.SaveChangesAsync();
@@ -1622,7 +1678,6 @@ namespace VOL.Ai.Services
         }
 
 
-
         /// <summary>
         /// 登录
         /// </summary>