diff --git a/YD_YiLu.Commons/Dto/DeviceSync/DeviceSyncGradeOrderDto.cs b/YD_YiLu.Commons/Dto/DeviceSync/DeviceSyncGradeOrderDto.cs
index 42ecb36..2d5cf1b 100644
--- a/YD_YiLu.Commons/Dto/DeviceSync/DeviceSyncGradeOrderDto.cs
+++ b/YD_YiLu.Commons/Dto/DeviceSync/DeviceSyncGradeOrderDto.cs
@@ -39,4 +39,36 @@ namespace YD_YiLu.Commons.Dto.DeviceSync
         public int CourseId { get; set; }
         public string CourseName { get; set; }
     }
+
+    public class DeviceSyncOrganizationGradeOrderItemDto
+    {
+        public string OrganizationName { get; set; }
+        public string SumScore { get; set; }
+        public string AvgScore { get; set; }
+        public int SumCount { get; set; }
+        public int CourseId { get; set; }
+        public string CourseName { get; set; }
+    }
+
+    public class DeviceSyncBestScoreRequestDto
+    {
+        public int DeviceType { get; set; }
+        public string DeviceSerial { get; set; }
+        public int CourseId { get; set; }
+        public int Gender { get; set; }
+        public string UserSerial { get; set; }
+        public int Range { get; set; }
+    }
+
+    public class DeviceSyncBestScoreDto
+    {
+        public string UserSerial { get; set; }
+        public string Nickname { get; set; }
+        public int OrganizationId { get; set; }
+        public string OrganizationName { get; set; }
+        public int Gender { get; set; }
+        public string Score { get; set; }
+        public int CourseId { get; set; }
+        public string CourseName { get; set; }
+    }
 }
diff --git a/YD_YiLu/Controllers/DeviceSyncController.cs b/YD_YiLu/Controllers/DeviceSyncController.cs
index 57704d3..b38076e 100644
--- a/YD_YiLu/Controllers/DeviceSyncController.cs
+++ b/YD_YiLu/Controllers/DeviceSyncController.cs
@@ -7,7 +7,7 @@ using YD_YiLu.Commons.Dto.DeviceSync;
 namespace YD_YiLu.Api.Controllers
 {
     /// <summary>
-    /// 壹动站/壹体屏/活力课间屏 设备同步 HTTP 接口（小站登录与心跳见 WebSocket：<c>/ws/camera/device</c>）
+    /// 设备同步 HTTP 接口。
     /// </summary>
     [AllowAnonymous]
     public class DeviceSyncController : ControllerBase
@@ -22,7 +22,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 人员拉取（全量，与 user_page 共用服务逻辑；活力课间屏）
+        /// 人员全量拉取。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/user")]
@@ -32,7 +32,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 人员分页下发（壹动站/壹体屏；弃用的 user_trace 请改用本接口）
+        /// 人员分页下发。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/user_page")]
@@ -48,14 +48,14 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 弃用地址别名：device/sync/user_trace → 与 user_page 相同
+        /// user_trace 别名。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/user_trace")]
         public Task<object> UserTrace([FromBody] DeviceSyncUserPageRequestDto dto) => UserPullPage(dto);
 
         /// <summary>
-        /// 获取人员详情（壹动站协议）
+        /// 获取人员详情。
         /// </summary>
         [HttpGet]
         [Route("/device/sync/user/detail")]
@@ -65,7 +65,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 组织信息下发
+        /// 组织信息下发。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/organization")]
@@ -74,9 +74,8 @@ namespace YD_YiLu.Api.Controllers
             return await _deviceSyncService.OrganizationAsync(dto);
         }
 
-
         /// <summary>
-        /// 人员上次成绩（按人员序列号批量）
+        /// 人员上次成绩。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/grade/last_grade")]
@@ -88,7 +87,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 成绩批量上报
+        /// 成绩批量上报。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/train_push")]
@@ -106,7 +105,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 获取训练详情
+        /// 获取训练详情。
         /// </summary>
         [HttpGet]
         [Route("/device/sync/train/details")]
@@ -117,7 +116,7 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 个人成绩排行榜
+        /// 个人成绩排行榜。
         /// </summary>
         [HttpPost]
         [Route("/device/sync/grade/order")]
@@ -128,7 +127,29 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 查询运动记录
+        /// 组织（班级）成绩排行榜。
+        /// </summary>
+        [HttpPost]
+        [Route("/device/sync/organization_grade/order")]
+        public async Task<object> OrganizationGradeOrder([FromBody] DeviceSyncGradeOrderRequestDto dto)
+        {
+            var res = await _deviceSyncService.OrganizationGradeOrderAsync(dto);
+            return res;
+        }
+
+        /// <summary>
+        /// 查询挑战最好成绩。
+        /// </summary>
+        [HttpPost]
+        [Route("/device/sync/grade/best_score")]
+        public async Task<object> BestScore([FromBody] DeviceSyncBestScoreRequestDto dto)
+        {
+            var res = await _deviceSyncService.BestScoreAsync(dto);
+            return res;
+        }
+
+        /// <summary>
+        /// 查询运动记录。
         /// </summary>
         [HttpPost]
         [Route("/applet/train/record_app")]
@@ -139,10 +160,10 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 查询我的运动
+        /// 查询我的运动。
         /// </summary>
         [HttpPost]
-        [Route("/device/sync/train/my_record/ytp")]
+        [Route("/device/sync/grade/my_record")]
         public async Task<object> MyRecord([FromBody] DeviceSyncMyRecordRequestDto dto)
         {
             var res = await _deviceSyncService.MyRecordAsync(dto);
@@ -150,10 +171,8 @@ namespace YD_YiLu.Api.Controllers
         }
 
         /// <summary>
-        /// 视频回放上传
+        /// 视频回放上传。
         /// </summary>
-        /// <param name="dto"></param>
-        /// <returns></returns>
         [HttpPost("device/sync/video/upload")]
         public async Task<bool> UploadVideo([FromForm] DeviceVideoUploadRequestDto dto)
         {
diff --git a/YD_YiLu/Services/Impl/DeviceSyncService.cs b/YD_YiLu/Services/Impl/DeviceSyncService.cs
index 04b76a8..eaf2c8e 100644
--- a/YD_YiLu/Services/Impl/DeviceSyncService.cs
+++ b/YD_YiLu/Services/Impl/DeviceSyncService.cs
@@ -564,6 +564,137 @@ namespace YD_YiLu.Api.Services.Impl
             }).ToList();
         }
 
+        public async Task<List<DeviceSyncOrganizationGradeOrderItemDto>> OrganizationGradeOrderAsync(DeviceSyncGradeOrderRequestDto dto)
+        {
+            var orgId = await GetOrgIdByDeviceAsync(dto.DeviceSerial);
+            if (!orgId.HasValue) return new List<DeviceSyncOrganizationGradeOrderItemDto>();
+
+            string schoolCode = await _context.School
+                .Where(x => x.Id == orgId)
+                .Select(x => x.SchoolCode)
+                .FirstAsync();
+
+            var (start, end) = GetDateRange(dto.DateType, dto.QueryStartTime, dto.QueryEndTime);
+
+            var query = from t in _context.YL_Train
+                        join s in _context.Student on t.UserSerial equals s.StudentNo
+                        where s.SchoolCode == schoolCode
+                              && t.Score.HasValue
+                              && t.Score.Value > 0
+                        select new { t, s };
+
+            if (dto.CourseId.HasValue)
+                query = query.Where(x => x.t.CourseId == dto.CourseId.Value);
+
+            if (dto.Gender > 0)
+                query = query.Where(x => x.s.Sex == dto.Gender.Value);
+
+            if (dto.OrganizeId != null && dto.OrganizeId.Count > 0 && dto.OrganizeId[0] > 0)
+                query = query.Where(x => dto.OrganizeId.Contains(x.s.ClassId ?? 0));
+
+            if (start.HasValue)
+                query = query.Where(x => x.t.StartTime >= start.Value);
+
+            if (end.HasValue)
+                query = query.Where(x => x.t.StartTime < end.Value.AddDays(1));
+
+            var page = dto.Page < 1 ? 1 : dto.Page;
+            var size = dto.Size < 1 ? 10 : dto.Size;
+
+            var grouped = await query
+                .GroupBy(x => new { x.s.ClassId, x.s.ClassName, x.t.CourseId })
+                .Select(g => new
+                {
+                    g.Key.ClassName,
+                    g.Key.CourseId,
+                    SumScore = g.Sum(x => x.t.Score ?? 0),
+                    AvgScore = g.Average(x => x.t.Score ?? 0),
+                    SumCount = g.Count()
+                })
+                .OrderByDescending(x => x.SumScore)
+                .Skip((page - 1) * size)
+                .Take(size)
+                .ToListAsync();
+
+            return grouped.Select(x => new DeviceSyncOrganizationGradeOrderItemDto
+            {
+                OrganizationName = x.ClassName ?? "",
+                SumScore = Math.Round(x.SumScore).ToString("0"),
+                AvgScore = x.AvgScore.ToString("0.##"),
+                SumCount = x.SumCount,
+                CourseId = x.CourseId,
+                CourseName = Util.GetEnumDescription<CourseType>(x.CourseId)
+            }).ToList();
+        }
+
+        public async Task<DeviceSyncBestScoreDto> BestScoreAsync(DeviceSyncBestScoreRequestDto dto)
+        {
+            var orgId = await GetOrgIdByDeviceAsync(dto.DeviceSerial);
+            if (!orgId.HasValue) return null;
+
+            string schoolCode = await _context.School
+                .Where(x => x.Id == orgId)
+                .Select(x => x.SchoolCode)
+                .FirstAsync();
+
+            var currentStudent = await _context.Student
+                .FirstOrDefaultAsync(x => x.SchoolCode == schoolCode && x.StudentNo == dto.UserSerial);
+
+            if (currentStudent == null)
+                return null;
+
+            var currentClass = currentStudent.ClassId.HasValue
+                ? await _context.Class.FirstOrDefaultAsync(x => x.Id == currentStudent.ClassId.Value)
+                : null;
+
+            var query = from t in _context.YL_Train
+                        join s in _context.Student on t.UserSerial equals s.StudentNo
+                        where s.SchoolCode == schoolCode
+                              && t.CourseId == dto.CourseId
+                              && s.Sex == dto.Gender
+                              && t.Score.HasValue
+                              && t.Score.Value > 0
+                        select new { t, s };
+
+            if (dto.Range == 1)
+            {
+                query = query.Where(x => x.s.ClassId == currentStudent.ClassId);
+            }
+            else if (dto.Range == 2 && currentClass != null)
+            {
+                var classIds = await _context.Class
+                    .Where(x => x.SchoolCode == schoolCode && x.GradeId == currentClass.GradeId)
+                    .Select(x => x.Id)
+                    .ToListAsync();
+
+                query = query.Where(x => classIds.Contains(x.s.ClassId ?? 0));
+            }
+
+            var best = await query
+                .OrderByDescending(x => x.t.Score)
+                .ThenBy(x => x.t.StartTime)
+                .FirstOrDefaultAsync();
+
+            if (best == null)
+                return null;
+
+            var bestClass = best.s.ClassId.HasValue
+                ? await _context.Class.FirstOrDefaultAsync(x => x.Id == best.s.ClassId.Value)
+                : null;
+
+            return new DeviceSyncBestScoreDto
+            {
+                UserSerial = best.s.StudentNo,
+                Nickname = best.s.StudentName,
+                OrganizationId = best.s.ClassId ?? 0,
+                OrganizationName = bestClass?.ClassName ?? best.s.ClassName ?? "",
+                Gender = best.s.Sex,
+                Score = best.t.Score?.ToString("0.##") ?? "0",
+                CourseId = best.t.CourseId,
+                CourseName = Util.GetEnumDescription<CourseType>(best.t.CourseId)
+            };
+        }
+
         public async Task<List<DeviceSyncUserDto>> LastGradeAsync(DeviceSyncLastGradeRequestDto dto)
         {
             if (dto?.UserSerials == null || dto.UserSerials.Count == 0)
diff --git a/YD_YiLu/Services/Interface/IDeviceSyncService.cs b/YD_YiLu/Services/Interface/IDeviceSyncService.cs
index 52daf19..471a8ea 100644
--- a/YD_YiLu/Services/Interface/IDeviceSyncService.cs
+++ b/YD_YiLu/Services/Interface/IDeviceSyncService.cs
@@ -38,6 +38,10 @@ namespace YD_YiLu.Api.Services.Interface
         /// </summary>
         Task<List<DeviceSyncGradeOrderItemDto>> GradeOrderAsync(DeviceSyncGradeOrderRequestDto dto);
 
+        Task<List<DeviceSyncOrganizationGradeOrderItemDto>> OrganizationGradeOrderAsync(DeviceSyncGradeOrderRequestDto dto);
+
+        Task<DeviceSyncBestScoreDto> BestScoreAsync(DeviceSyncBestScoreRequestDto dto);
+
         /// <summary>
         /// 人员上次成绩（按人员序列号批量查询）
         /// </summary>