diff --git a/Binance.TradeRobot.API/Controllers/RobotController.cs b/Binance.TradeRobot.API/Controllers/RobotController.cs
index 8acb9b2..a228733 100644
--- a/Binance.TradeRobot.API/Controllers/RobotController.cs
+++ b/Binance.TradeRobot.API/Controllers/RobotController.cs
@@ -37,6 +37,15 @@ namespace Binance.TradeRobot.API.Controllers
             robotBusiness.StopRobot(robotId);
         }
 
+        /// <summary>
+        /// 刷新机器人运行时长
+        /// </summary>
+        [HttpPost]
+        public void RefreshRobotRuningTime()
+        {
+            robotBusiness.RefreshRobotRuningTime();
+        }
+
         /// <summary>
         /// 创建金字塔策略机器人
         /// </summary>
@@ -66,5 +75,14 @@ namespace Binance.TradeRobot.API.Controllers
         {
             return robotBusiness.GetD21PolicyRobotList();
         }
+
+        /// <summary>
+        /// D21补救检查
+        /// </summary>
+        [HttpPost]
+        public void D21Remedy()
+        {
+            robotBusiness.D21Remedy();
+        }
     }
 }
diff --git a/Binance.TradeRobot.Business/Business/RobotBusiness.cs b/Binance.TradeRobot.Business/Business/RobotBusiness.cs
index 5ffe730..0a77602 100644
--- a/Binance.TradeRobot.Business/Business/RobotBusiness.cs
+++ b/Binance.TradeRobot.Business/Business/RobotBusiness.cs
@@ -4,12 +4,15 @@ using Binance.TradeRobot.Common.Extensions;
 using Binance.TradeRobot.Model.Base;
 using Binance.TradeRobot.Model.Db;
 using Binance.TradeRobot.Model.Dto;
+using Binance.TradeRobot.Model.RuningInfo;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection;
 using System;
 using System.Collections.Generic;
 using System.Data.Common;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using Yitter.IdGenerator;
 
 namespace Binance.TradeRobot.Business
@@ -20,9 +23,23 @@ namespace Binance.TradeRobot.Business
         private Lazy<GlobalContext> globalContextLazy;
         private GlobalContext globalContext => globalContextLazy.Value;
 
-        public RobotBusiness(IFreeSql fsql, NLogManager logManager, IIdGenerator idGenerator, IMemoryCache memoryCache, IServiceProvider serviceProvider) : base(fsql, logManager, idGenerator, memoryCache)
+        private IEnumerable<ITradeBusiness> tradeBusinessList;
+        private TaskSchedulerManager taskSchedulerManager;
+        private ExchangeBusiness exchangeBusiness;
+
+        public RobotBusiness(IFreeSql fsql,
+                             NLogManager logManager,
+                             IIdGenerator idGenerator,
+                             IMemoryCache memoryCache,
+                             IEnumerable<ITradeBusiness> tradeBusinessList,
+                             TaskSchedulerManager taskSchedulerManager,
+                             ExchangeBusiness exchangeBusiness,
+                             IServiceProvider serviceProvider) : base(fsql, logManager, idGenerator, memoryCache)
         {
             this.globalContextLazy = new Lazy<GlobalContext>(() => serviceProvider.GetService<GlobalContext>());
+            this.tradeBusinessList = tradeBusinessList;
+            this.taskSchedulerManager = taskSchedulerManager;
+            this.exchangeBusiness = exchangeBusiness;
         }
 
         /// <summary>
@@ -82,6 +99,14 @@ namespace Binance.TradeRobot.Business
                 globalContext.UnSubscribeOrderPublish(robot);
         }
 
+        /// <summary>
+        /// 刷新机器人运行时长
+        /// </summary>
+        public void RefreshRobotRuningTime()
+        {
+            fsql.Update<Robot>().Set(r => r.RunningTime + 60).Where(r => r.State == Enums.RobotState.Runing).ExecuteAffrows();
+        }
+
         /// <summary>
         /// 添加机器人和账户
         /// </summary>
@@ -286,5 +311,55 @@ namespace Binance.TradeRobot.Business
             }
             return robotList;
         }
+
+        public void D21Remedy()
+        {
+            var d21RobotList = GetD21PolicyRobotList(robotState: Enums.RobotState.Runing, isLoadRecentTradeProfit: false, isLoadAPIKey: true);
+            if (d21RobotList == null || d21RobotList.Count() == 0)
+                throw new BusinessException("未找到符合条件的机器人");
+
+            foreach (var d21Robot in d21RobotList)
+            {
+                var runingInfo = RedisHelper.Get<D21RuningInfo>(d21Robot.Id.ToString()) ?? new D21RuningInfo() { RobotId = d21Robot.Id };
+                if (runingInfo.ErrorCrossSingal == null || runingInfo.ErrorCrossSingalTime == 0)
+                    continue;
+
+                var previouKID = DateTime.Now.GetKID(d21Robot.D21Policy.PeriodicSignal, true);
+                var currentKID = DateTime.Now.GetKID(d21Robot.D21Policy.PeriodicSignal, false);
+                var cycle = currentKID - previouKID; //单位周期的时间戳差距
+
+                if ((previouKID - runingInfo.ErrorCrossSingalTime) / cycle > 3)
+                {
+                    var errorCrossSingal = runingInfo.ErrorCrossSingal.Value;
+                    runingInfo.ErrorCrossSingal = null;
+                    runingInfo.ErrorCrossSingalTime = 0;
+                    RedisHelper.Set(d21Robot.Id.ToString(), runingInfo);
+
+                    var symbolInfo = exchangeBusiness.GetSymbol(d21Robot.ExchangeId, d21Robot.Symbol);
+                    var d21TradeBusiness = tradeBusinessList.FirstOrDefault(t => t.TradePolicy == Enums.TradePolicy.D21);
+
+                    if (errorCrossSingal == Enums.SingalType.多交叉)
+                    {
+                        Task.Factory.StartNew(() => d21TradeBusiness.LongCross(new D21SingalRequest()
+                        {
+                            RobotId = d21Robot.Id,
+                            KLinePeriodic = d21Robot.D21Policy.PeriodicSignal,
+                            SingalType = errorCrossSingal,
+                            Symbol = d21Robot.Symbol
+                        }, d21Robot, true, symbolInfo), CancellationToken.None, TaskCreationOptions.LongRunning, taskSchedulerManager.SingalTaskScheduler);
+                    }
+                    else if (errorCrossSingal == Enums.SingalType.空交叉)
+                    {
+                        Task.Factory.StartNew(() => d21TradeBusiness.ShortCross(new D21SingalRequest()
+                        {
+                            RobotId = d21Robot.Id,
+                            KLinePeriodic = d21Robot.D21Policy.PeriodicSignal,
+                            SingalType = errorCrossSingal,
+                            Symbol = d21Robot.Symbol
+                        }, d21Robot, true, symbolInfo), CancellationToken.None, TaskCreationOptions.LongRunning, taskSchedulerManager.SingalTaskScheduler);
+                    }
+                }
+            }
+        }
     }
 }
diff --git a/Binance.TradeRobot.Business/Business/SingalBusiness.cs b/Binance.TradeRobot.Business/Business/SingalBusiness.cs
index 0ae3fef..bd728fb 100644
--- a/Binance.TradeRobot.Business/Business/SingalBusiness.cs
+++ b/Binance.TradeRobot.Business/Business/SingalBusiness.cs
@@ -1,6 +1,7 @@
 using Binance.TradeRobot.Common.DI;
 using Binance.TradeRobot.Model.Base;
 using Binance.TradeRobot.Model.Dto;
+using Binance.TradeRobot.Model.RuningInfo;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection;
 using System.Collections.Generic;
@@ -75,11 +76,6 @@ namespace Binance.TradeRobot.Business
             }
         }
 
-        public void D21Remedy()
-        {
-            var d21RobotList = robotBusiness.GetD21PolicyRobotList(robotState: Enums.RobotState.Runing, isLoadRecentTradeProfit: false, isLoadAPIKey: true);
-            if (d21RobotList == null || d21RobotList.Count() == 0)
-                throw new BusinessException("未找到符合条件的机器人");
-        }
+       
     }
 }
diff --git a/Binance.TradeRobot.Model/Dto/Response/Robot/RobotResponse.cs b/Binance.TradeRobot.Model/Dto/Response/Robot/RobotResponse.cs
index 4c702ea..0761657 100644
--- a/Binance.TradeRobot.Model/Dto/Response/Robot/RobotResponse.cs
+++ b/Binance.TradeRobot.Model/Dto/Response/Robot/RobotResponse.cs
@@ -27,9 +27,6 @@ namespace Binance.TradeRobot.Model.Dto
 
         public Enums.Exchange ExchangeId { get; set; }
 
-        /// <summary>
-        /// 订单推送日志Key
-        /// </summary>
         //public virtual string OrderPublishLogKey
         //{
         //    get
@@ -38,8 +35,6 @@ namespace Binance.TradeRobot.Model.Dto
         //    }
         //}
 
-        public SymbolInfoResponse SymbolInfo { get; set; }
-
         /// <summary>
         /// 机器人账户对象
         /// </summary>