diff --git a/CANModule/ViewModels/CollectCANSingalSettingViewModel.cs b/CANModule/ViewModels/CollectCANSingalSettingViewModel.cs
index 5fc9ae3..80cf9f7 100644
--- a/CANModule/ViewModels/CollectCANSingalSettingViewModel.cs
+++ b/CANModule/ViewModels/CollectCANSingalSettingViewModel.cs
@@ -164,6 +164,7 @@ namespace CANModule.ViewModels
             char lastChar = title[title.Length - 1];
             // 3. "TestCellX"转int
             MessageChannel = int.Parse(lastChar.ToString())-1;
+            if (MessageChannel >= 4) MessageChannel -= 4;
             RaisePropertyChanged(nameof(ConfigurationList));
         }
         #endregion