diff --git a/src/Desktop/RodelAgent.UI/Controls/Chat/SystemInstructionPanel.xaml.cs b/src/Desktop/RodelAgent.UI/Controls/Chat/SystemInstructionPanel.xaml.cs
index f3f3aae..957810c 100644
--- a/src/Desktop/RodelAgent.UI/Controls/Chat/SystemInstructionPanel.xaml.cs
+++ b/src/Desktop/RodelAgent.UI/Controls/Chat/SystemInstructionPanel.xaml.cs
@@ -38,7 +38,7 @@ private void OnSystemBoxTextChanged(object sender, TextChangedEventArgs e)
         }
 
         ViewModel.Data.SystemInstruction = SystemBox.Text;
-        ViewModel.CalcTotalTokenCountCommand.Execute(default);
+        ViewModel.ResetLastInputTimeCommand.Execute(default);
         _textChanged = true;
     }
 
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Messages.cs b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Messages.cs
index 3b232f6..3a8bf59 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Messages.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Messages.cs
@@ -306,4 +306,18 @@ await Task.Run(() =>
             });
         });
     }
+
+    [RelayCommand]
+    private void TryAutoCalcUserInputToken()
+    {
+        if (_lastInputTime is not null && DateTimeOffset.Now - _lastInputTime >= TimeSpan.FromSeconds(1))
+        {
+            _lastInputTime = default;
+            CalcTotalTokenCountCommand.Execute(default);
+        }
+    }
+
+    [RelayCommand]
+    private void ResetLastInputTime()
+        => _lastInputTime = DateTimeOffset.Now;
 }
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Properties.cs b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Properties.cs
index c970e64..b492f0c 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Properties.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.Properties.cs
@@ -18,6 +18,7 @@ public sealed partial class ChatSessionViewModel
     private readonly IStorageService _storageService;
     private readonly ILogger<ChatSessionViewModel> _logger;
     private CancellationTokenSource _cancellationTokenSource;
+    private DateTimeOffset? _lastInputTime;
 
     private int _baseTokenCount;
 
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.cs b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.cs
index eedd3a3..0bc23d0 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Components/ChatSessionViewModel/ChatSessionViewModel.cs
@@ -74,10 +74,8 @@ private void Initialize(ChatSession data)
     /// 在进入视图开始显示时执行.
     /// </summary>
     [RelayCommand]
-    private async Task EnterViewAsync()
-    {
-        await CalcTotalTokenCountAsync();
-    }
+    private void EnterView()
+        => CalcTotalTokenCountCommand.Execute(default);
 
     [RelayCommand]
     private void NewSession()
@@ -251,5 +249,5 @@ partial void OnModelChanged(string value)
         => CheckCurrentModelStatus();
 
     partial void OnUserInputChanged(string value)
-        => CalcUserInputTokenCountCommand.Execute(default);
+        => _lastInputTime = DateTimeOffset.Now;
 }
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Properties.cs b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Properties.cs
index 77d40a9..5b08a6e 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Properties.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Properties.cs
@@ -20,6 +20,7 @@ public sealed partial class ChatServicePageViewModel
     private readonly ILogger<ChatServicePageViewModel> _logger;
     private readonly ChatPresetModuleViewModel _chatPresetModuleVM;
     private readonly GroupPresetModuleViewModel _groupPresetModuleVM;
+    private readonly DispatcherTimer? _tokenTimer;
     private bool _isPluginInitialized;
 
     [ObservableProperty]
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Sessions.cs b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Sessions.cs
index 40bce45..008fc53 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Sessions.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.Sessions.cs
@@ -314,4 +314,7 @@ private void ExitGroupChat()
         CurrentGroup?.SaveSessionToDatabaseCommand.ExecuteAsync(default);
         CurrentGroup = default;
     }
+
+    private void OnTokenTimerTick(object? sender, object e)
+        => CurrentSession?.TryAutoCalcUserInputTokenCommand.Execute(default);
 }
diff --git a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.cs b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.cs
index af04446..55eb2d7 100644
--- a/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.cs
+++ b/src/Desktop/RodelAgent.UI/ViewModels/Pages/ChatServicePageViewModel/ChatServicePageViewModel.cs
@@ -50,6 +50,14 @@ public ChatServicePageViewModel(
         HistoryGroupSessions.CollectionChanged += OnHistorySessionsCountChanged;
         Plugins.CollectionChanged += OnPluginsCountChanged;
         CheckPluginsCount();
+
+        if (_tokenTimer is null)
+        {
+            _tokenTimer = new DispatcherTimer();
+            _tokenTimer.Interval = TimeSpan.FromMilliseconds(400);
+            _tokenTimer.Tick += OnTokenTimerTick;
+            _tokenTimer.Start();
+        }
     }
 
     /// <inheritdoc/>