diff --git a/CoreCms.Net.Model/ViewModels/SQ/SQReservationsDto.cs b/CoreCms.Net.Model/ViewModels/SQ/SQReservationsDto.cs
index a827e6e..7801573 100644
--- a/CoreCms.Net.Model/ViewModels/SQ/SQReservationsDto.cs
+++ b/CoreCms.Net.Model/ViewModels/SQ/SQReservationsDto.cs
@@ -102,7 +102,26 @@ namespace CoreCms.Net.Model.ViewModels.SQ
 
         [StringLength(maximumLength: 255, ErrorMessage = "{0}不能超过{1}字")]
         public new System.String remarks { get; set; }
+
+        /// <summary>
+        /// 重要信息
+        /// </summary>
+        public string important_data { get; set; }
+    }
+    public class SQReservationParticipantsAddDto
+    {
+
+        /// <summary>
+        /// 预约ID
+        /// </summary>
+
+        public new System.Int32 ReservationsId { get; set; }
+
+
+        /// <summary>
+        /// 重要信息
+        /// </summary>
+        public string important_data { get; set; }
     }
 
-
 }
diff --git a/CoreCms.Net.Web.WebApi/Controllers/SQController.cs b/CoreCms.Net.Web.WebApi/Controllers/SQController.cs
index 9b67c53..62fa1c1 100644
--- a/CoreCms.Net.Web.WebApi/Controllers/SQController.cs
+++ b/CoreCms.Net.Web.WebApi/Controllers/SQController.cs
@@ -29,6 +29,7 @@ using CoreCms.Net.Utility.Extensions;
 using ToolGood.Words.internals;
 using NPOI.SS.Formula.PTG;
 using NPOI.OpenXmlFormats.Dml;
+using Humanizer;
 namespace CoreCms.Net.Web.WebApi.Controllers;
 
 /// <summary>
@@ -544,6 +545,7 @@ ISQRoomUnavailableTimesServices sQRoomUnavailableTimesServices
             role = 1,
             status = 0,
             is_refund = dto.deposit_fee > 0 ? 1 : 0,
+            important_data = dto.important_data
         };
         await _SQReservationParticipantsServices.InsertAsync(participant);
 
@@ -554,17 +556,18 @@ ISQRoomUnavailableTimesServices sQRoomUnavailableTimesServices
             Msg = "预约成功"
         };
     }
+
     /// <summary>
     /// 用户加入预约接口
     /// </summary>
-    /// <param name="reservationId">预约ID</param>
+    /// <param name="dto">预约</param>
     /// <returns></returns>
     [HttpPost]
     [Authorize]
-    public async Task<WebApiDto> JoinReservation([FromBody] int reservationId)
+    public async Task<WebApiDto> JoinReservation([FromBody] SQReservationParticipantsAddDto dto)
     {
         var userId = _user.ID;
-
+        var reservationId = dto.ReservationsId;
         // 1. 校验预约是否存在且未结束
         var reservation = await _SQReservationsServices.QueryByClauseAsync(
             r => r.id == reservationId && r.end_time > DateTime.Now && r.status < 2,
@@ -593,6 +596,61 @@ ISQRoomUnavailableTimesServices sQRoomUnavailableTimesServices
             };
         }
 
+        // 2.1 校验用户是否有其它预约时间冲突
+        // 2.1 校验用户是否有其它预约时间冲突（只查未开始或正在进行中的预约）
+        var now = DateTime.Now;
+        var hasConflict = await _SQReservationParticipantsServices.QueryMuchAsync<SQReservationParticipants, SQReservations, int>(
+            (p, r) => new object[]
+            {
+                JoinType.Inner, p.reservation_id == r.id
+            },
+            (p, r) => r.id,
+            (p, r) =>
+                p.user_id == userId &&
+                p.status == 0 && // 只查未退出
+                r.status < 2 && // 只查未取消/未结束
+                r.end_time > now && // 只查未结束
+                r.start_time < reservation.end_time && r.end_time > reservation.start_time // 时间有重叠
+        );
+
+        if (hasConflict != null && hasConflict.Count > 0)
+        {
+            return new WebApiDto
+            {
+                Code = 402,
+                Data = null,
+                Msg = "您有其它预约时间冲突，无法加入该预约"
+            };
+        }
+        //// 查询用户所有未结束的预约参与记录
+        //var userReservations = await _SQReservationParticipantsServices.QueryListByClauseAsync(
+        //    p => p.user_id == userId && p.status == 0, // 只查未退出的
+        //    p => p.id, OrderByType.Asc);
+
+        //if (userReservations != null && userReservations.Count > 0)
+        //{
+        //    // 获取这些预约的ID
+        //    var reservationIds = userReservations.Select(p => p.reservation_id).ToList();
+        //    // 查询这些预约的时间段
+        //    var reservations = await _SQReservationsServices.QueryListByClauseAsync(
+        //        r => reservationIds.Contains(r.id) && r.status < 2 && r.end_time > DateTime.Now,
+        //        r => r.id, OrderByType.Asc);
+
+        //    // 检查时间是否有重叠
+        //    foreach (var r in reservations)
+        //    {
+        //        if (r.start_time < reservation.end_time && r.end_time > reservation.start_time)
+        //        {
+        //            return new WebApiDto
+        //            {
+        //                Code = 402,
+        //                Data = null,
+        //                Msg = "您有其它预约时间冲突，无法加入该预约"
+        //            };
+        //        }
+        //    }
+        //}
+
         //3.校验预约是否已满（如有容量限制，可补充）
         var participantsCount = await _SQReservationParticipantsServices.QueryListByClauseAsync(
             p => p.reservation_id == reservationId, p => p.id, OrderByType.Asc);
@@ -613,7 +671,9 @@ ISQRoomUnavailableTimesServices sQRoomUnavailableTimesServices
             user_id = userId,
             join_time = DateTime.Now,
             role = 0, // 0为参与者
-            status = 0
+            status = 0,
+            is_refund = reservation.deposit_fee > 0 ? 1 : 0,
+            important_data = dto.important_data
         };
         await _SQReservationParticipantsServices.InsertAsync(participant);