diff --git a/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs b/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
index e318e30..48d8d7d 100644
--- a/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
+++ b/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
@@ -82,6 +82,24 @@ namespace YD_AllHeartRates.Api.Services.Impl
             return res;
         }
 
+        /// <summary>
+        /// 根据班级Id获取学生列表
+        /// </summary>
+        /// <param name="classId"></param>
+        /// <returns></returns>
+        public async Task<List<StudentDto>> StudentList(int classId)
+        {
+            var res = await _sportsContext.Student.Where(x => x.SchoolCode == schoolCode && x.ClassId == classId).Select(x => new StudentDto
+            {
+                StudentNo = x.StudentNo,
+                StudentName = x.StudentName,
+                Photo = x.Photo ?? "",
+                Sex = x.Sex
+            }).ToListAsync();
+
+            return res;
+        }
+
         /// <summary>
         /// 心率数据
         /// </summary>
@@ -105,14 +123,20 @@ namespace YD_AllHeartRates.Api.Services.Impl
             string studentListKey = $"students:{schoolCode}:{classId}";
 
             // 2. 尝试从缓存获取
-            var studentList = _caching.Get<List<S_Student>>(studentListKey);
+            var studentList = _caching.Get<List<StudentDto>>(studentListKey);
 
             // 3. 如果缓存没有 → 查询数据库 + 写入缓存
             if (studentList == null)
             {
                 studentList = await _sportsContext.Student
                     .Where(x => x.ClassId == classId && x.SchoolCode == schoolCode && x.StudentStatus == 1)
-                    .ToListAsync();
+                    .Select(x => new StudentDto
+                    {
+                        StudentNo = x.StudentNo,
+                        StudentName = x.StudentName,
+                        Sex = x.Sex,
+                        Photo = x.Photo ?? ""
+                    }).ToListAsync();
 
                 _caching.AddObject(studentListKey, studentList, 28800); // 缓存 8 小时
             }
@@ -196,6 +220,5 @@ namespace YD_AllHeartRates.Api.Services.Impl
 
             return res;
         }
-
     }
 }
diff --git a/YD_AllHeartRates.Api/Services/Interface/ILargeScreenService.cs b/YD_AllHeartRates.Api/Services/Interface/ILargeScreenService.cs
index c2f0b34..d55e4ca 100644
--- a/YD_AllHeartRates.Api/Services/Interface/ILargeScreenService.cs
+++ b/YD_AllHeartRates.Api/Services/Interface/ILargeScreenService.cs
@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Mvc;
+using YD_AllHeartRates.Commons.Dto.HeartRateRepor;
 using YD_AllHeartRates.Commons.Dto.LargeScreen;
 
 namespace YD_AllHeartRates.Api.Services.Interface
@@ -14,6 +15,13 @@ namespace YD_AllHeartRates.Api.Services.Interface
         /// <returns></returns>
         Task<SchoolDto> SchoolInfo();
 
+        /// <summary>
+        /// 根据班级获取学生
+        /// </summary>
+        /// <param name="classId"></param>
+        /// <returns></returns>
+        Task<List<StudentDto>> StudentList(int classId);
+
         /// <summary>
         /// 心率数据
         /// </summary>
diff --git a/YD_AllHeartRates.Commons/Dto/LargeScreen/SchoolDto.cs b/YD_AllHeartRates.Commons/Dto/LargeScreen/SchoolDto.cs
index 5162a66..659842f 100644
--- a/YD_AllHeartRates.Commons/Dto/LargeScreen/SchoolDto.cs
+++ b/YD_AllHeartRates.Commons/Dto/LargeScreen/SchoolDto.cs
@@ -64,4 +64,5 @@ namespace YD_AllHeartRates.Commons.Dto.LargeScreen
         /// </summary>
         public string Name { get; set; }
     }
+
 }