diff --git a/ds-wms-service/DS.WMS.Core/TaskPlat/Interface/ITaskManageCutDateChangeService.cs b/ds-wms-service/DS.WMS.Core/TaskPlat/Interface/ITaskManageCutDateChangeService.cs
new file mode 100644
index 00000000..297f61e0
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+++ b/ds-wms-service/DS.WMS.Core/TaskPlat/Interface/ITaskManageCutDateChangeService.cs
@@ -0,0 +1,35 @@
+using DS.Module.Core;
+using DS.Module.DjyServiceStatus;
+using DS.WMS.Core.TaskPlat.Dtos;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DS.WMS.Core.TaskPlat.Interface
+{
+    public interface ITaskManageCutDateChangeService
+    {
+        /// <summary>
+        /// 通过任务主键获取截止时间变更详情
+        /// </summary>
+        /// <param name="taskPkId">截止时间变更任务主键</param>
+        /// <returns>返回回执</returns>
+        Task<DataResult<List<TaskCutDateChangeShowDto>>> GetInfoByTaskId(string taskPkId);
+
+        /// <summary>
+        /// 检索对应的订舱订单并保存订舱ID
+        /// </summary>
+        /// <param name="taskPKId">截止时间变更任务主键</param>
+        /// <returns>返回回执</returns>
+        Task<TaskManageOrderResultDto> SearchAndMarkBookingOrder(string taskPKId);
+
+        /// <summary>
+        /// 发送邮件通知给客户
+        /// </summary>
+        /// <param name="taskPKId">截止时间变更主键</param>
+        /// <returns>返回回执</returns>
+        Task<TaskManageOrderResultDto> SendEmailToCustomer(string taskPKId);
+    }
+}