diff --git a/Txgy.FilesWatcher/ViewModels/MainViewModel.cs b/Txgy.FilesWatcher/ViewModels/MainViewModel.cs
index b83e060..66d69c3 100644
--- a/Txgy.FilesWatcher/ViewModels/MainViewModel.cs
+++ b/Txgy.FilesWatcher/ViewModels/MainViewModel.cs
@@ -484,7 +484,8 @@ namespace Txgy.FilesWatcher.ViewModels
                 {
                     timer1.Dispatcher.Invoke(() =>
                     {
-                        DataList.Add(new FileModel
+                        if(DataList.Count >= 20) { DataList.Remove(dataList.Last()); }
+                        DataList.Insert(0, new FileModel
                         {
                             CreateTime = DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss"),
                             Data = $"{currentT.AddMinutes(-2).ToString("yyyy-MM-dd T HH:mm:ss")}{a}"
@@ -573,10 +574,11 @@ namespace Txgy.FilesWatcher.ViewModels
                     UploadRealtimeFile.UploadRealtimeFileOnce(filePath, lastLine, WorkAreaId);
                     timer1.Dispatcher.Invoke(() =>
                     {
-                        RealTimeDataList.Add(new FileModel
+                        if (RealTimeDataList.Count >= 20) { RealTimeDataList.Remove(RealTimeDataList.Last()); }
+                        RealTimeDataList.Insert(0, new FileModel
                         {
                             CreateTime = DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss"),
-                            Data = $"{DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss")}事件上传成功。"
+                            Data = $"{lastLine},事件上传成功。"
                         });
                     });
                 }
@@ -587,7 +589,8 @@ namespace Txgy.FilesWatcher.ViewModels
                         MQPublish(a, b);
                         timer1.Dispatcher.Invoke(() =>
                         {
-                            MQTTDataList.Add(new FileModel
+                            if (MQTTDataList.Count >= 20) { MQTTDataList.Remove(MQTTDataList.Last()); }
+                            MQTTDataList.Insert(0, new FileModel
                             {
                                 CreateTime = DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss"),
                                 Data = $"{DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss")}事件上传成功。"
@@ -606,10 +609,11 @@ namespace Txgy.FilesWatcher.ViewModels
                     {
                         timer1.Dispatcher.Invoke(() =>
                         {
-                            PostDataList.Add(new FileModel
+                            if (PostDataList.Count >= 20) { PostDataList.Remove(PostDataList.Last()); }
+                            PostDataList.Insert(0,new FileModel
                             {
                                 CreateTime = DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss"),
-                                Data = $"{DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss")}事件上传成功。"
+                                Data = $"{lastLine},事件上传成功。"
                             });
                         });
                     }
@@ -621,7 +625,8 @@ namespace Txgy.FilesWatcher.ViewModels
                         MQPublish(a, b);
                         timer1.Dispatcher.Invoke(() =>
                         {
-                            MQTTDataList.Add(new FileModel
+                            if (MQTTDataList.Count >= 20) { MQTTDataList.Remove(MQTTDataList.Last()); }
+                            MQTTDataList.Insert(0, new FileModel
                             {
                                 CreateTime = DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss"),
                                 Data = $"{DateTime.Now.ToString("yyyy-MM-dd T HH:mm:ss")}事件上传成功。"