diff --git a/AIStudio.Wpf.DiagramDesigner/Converters/ConectorValueConverter.cs b/AIStudio.Wpf.DiagramDesigner/Converters/ConectorValueConverter.cs
index 17d9257..7eb4290 100644
--- a/AIStudio.Wpf.DiagramDesigner/Converters/ConectorValueConverter.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Converters/ConectorValueConverter.cs
@@ -14,31 +14,34 @@ namespace AIStudio.Wpf.DiagramDesigner
     {
         public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
         {
-            if (values == null || values.Length < 2)
+            if (values[0] is LogicalConnectorInfo logicalConnectorInfo)
             {
-                throw new NotImplementedException();
-            }
-            if (values[0] is double && values[2] is ConnectorValueType)
-            {
-                double connectorValue = (double)values[0];
-                string connectorString =  values[1] as string;
-                ConnectorValueType valueTypePoint = (ConnectorValueType)values[2];
-
-                if (valueTypePoint == ConnectorValueType.Bool)
+                if (logicalConnectorInfo.ErrorCode != Enums.ConnectorErrorCode.None) 
                 {
-                    return (connectorValue == 0) ? "F" : "T";
+                    if (parameter?.ToString() == "ToolTip")
+                    {
+                        return logicalConnectorInfo.ErrorMessage;
+                    }
+                    else
+                    {
+                        return logicalConnectorInfo.ErrorCode.ToString();
+                    }
                 }
-                else if (valueTypePoint == ConnectorValueType.Int)
+                else if (logicalConnectorInfo.ConnectorValueType == ConnectorValueType.Bool)
                 {
-                    return connectorValue.ToString("0");
+                    return (logicalConnectorInfo.ConnectorValue == 0) ? "F" : "T";
                 }
-                else if (valueTypePoint == ConnectorValueType.Real)
+                else if (logicalConnectorInfo.ConnectorValueType == ConnectorValueType.Int)
                 {
-                    return connectorValue.ToString("f3");
+                    return logicalConnectorInfo.ConnectorValue.ToString("0");
+                }
+                else if (logicalConnectorInfo.ConnectorValueType == ConnectorValueType.Real)
+                {
+                    return logicalConnectorInfo.ConnectorValue.ToString("f3");
                 }
                 else
                 {
-                    return connectorString;
+                    return logicalConnectorInfo.ConnectorString;
                 }
             }
             return null;
diff --git a/AIStudio.Wpf.DiagramDesigner/Enums/ConnectorErrorCode.cs b/AIStudio.Wpf.DiagramDesigner/Enums/ConnectorErrorCode.cs
new file mode 100644
index 0000000..55aa8d9
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/Enums/ConnectorErrorCode.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AIStudio.Wpf.DiagramDesigner.Enums
+{
+    public enum ConnectorErrorCode
+    {
+        None,
+        ConnErr,
+        ValueErr
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/Enums/ValueTypePoint.cs b/AIStudio.Wpf.DiagramDesigner/Enums/ConnectorValueType.cs
similarity index 86%
rename from AIStudio.Wpf.DiagramDesigner/Enums/ValueTypePoint.cs
rename to AIStudio.Wpf.DiagramDesigner/Enums/ConnectorValueType.cs
index ec68c36..fed1710 100644
--- a/AIStudio.Wpf.DiagramDesigner/Enums/ValueTypePoint.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Enums/ConnectorValueType.cs
@@ -10,7 +10,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         Real = 0,
         Int = 1,
         Bool = 2,
-        ValueType = 10,
-        String = 11,
+        ValueType = 99,
+        String = 100,
     }
 }
diff --git a/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml b/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
index 5a9693c..7773497 100644
--- a/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
+++ b/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
@@ -30,8 +30,8 @@
     </DataTemplate>
 
     <DataTemplate DataType="{x:Type dd:LogicalConnectorInfo}">
-        <Grid ToolTip="{Binding Name}">
-            <Grid Width="{Binding ConnectorWidth}" Height="{Binding ConnectorHeight}"  HorizontalAlignment="Left" VerticalAlignment="Top">
+        <Grid >
+            <Grid ToolTip="{Binding Name}" Width="{Binding ConnectorWidth}" Height="{Binding ConnectorHeight}"  HorizontalAlignment="Left" VerticalAlignment="Top">
                 <Grid.ContextMenu>
                     <ContextMenu ItemsSource="{Binding MenuOptions}">
                         <ContextMenu.ItemContainerStyle>
@@ -55,14 +55,19 @@
             <Control x:Name="label">
                 <Control.Template>
                     <ControlTemplate>
-                        <TextBlock x:Name="txtleft" FontSize="10" RenderTransformOrigin="0.5,0.5">
+                        <TextBlock x:Name="txtleft" FontSize="10" RenderTransformOrigin="0.5,0.5" TextTrimming="CharacterEllipsis">
                             <TextBlock.Text>
                                 <MultiBinding Converter="{StaticResource ConectorValueConverter}">
-                                    <Binding Path="ConnectorValue" />
-                                    <Binding Path="ConnectorString" />
-                                    <Binding Path="ConnectorValueType"/>
+                                    <Binding Path="." />
+                                    <Binding Path="ConnectorChanged" />
                                 </MultiBinding>
                             </TextBlock.Text>
+                            <TextBlock.ToolTip>
+                                <MultiBinding Converter="{StaticResource ConectorValueConverter}" ConverterParameter="ToolTip">
+                                    <Binding Path="." />
+                                    <Binding Path="ConnectorChanged" />
+                                </MultiBinding>
+                            </TextBlock.ToolTip>
                             <TextBlock.RenderTransform>
                                 <TransformGroup>
                                     <ScaleTransform/>
@@ -82,14 +87,19 @@
                 <Setter TargetName="label" Property="Template">
                     <Setter.Value>
                         <ControlTemplate>
-                            <TextBlock x:Name="txtRight" FontSize="10" RenderTransformOrigin="0.5,0.5" >
+                            <TextBlock x:Name="txtRight" FontSize="10" RenderTransformOrigin="0.5,0.5" TextTrimming="CharacterEllipsis">
                                 <TextBlock.Text>
-                                    <MultiBinding Converter="{StaticResource ConectorValueConverter}">
-                                        <Binding Path="ConnectorValue" />
-                                        <Binding Path="ConnectorString" />
-                                        <Binding Path="ConnectorValueType"/>
+                                    <MultiBinding Converter="{StaticResource ConectorValueConverter}">                                      
+                                        <Binding Path="." />
+                                        <Binding Path="ConnectorChanged" />
                                     </MultiBinding>
                                 </TextBlock.Text>
+                                <TextBlock.ToolTip>
+                                    <MultiBinding Converter="{StaticResource ConectorValueConverter}" ConverterParameter="ToolTip">
+                                        <Binding Path="." />
+                                        <Binding Path="ConnectorChanged" />
+                                    </MultiBinding>
+                                </TextBlock.ToolTip>
                                 <TextBlock.RenderTransform>
                                     <TransformGroup>
                                         <ScaleTransform/>
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/Connector/LogicalConnectorInfo.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/Connector/LogicalConnectorInfo.cs
index f739255..ab8ea0b 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/Connector/LogicalConnectorInfo.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/Connector/LogicalConnectorInfo.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Text;
+using AIStudio.Wpf.DiagramDesigner.Enums;
 using AIStudio.Wpf.DiagramDesigner.Models;
 
 namespace AIStudio.Wpf.DiagramDesigner
@@ -81,21 +83,54 @@ namespace AIStudio.Wpf.DiagramDesigner
             }
         }
 
-        public bool ConnectorError
+        private ConnectorErrorCode _errorCode;
+        public ConnectorErrorCode ErrorCode
         {
-            get; set;
-        }
-
-        public bool ValueError
-        {
-            get; set;
+            get
+            {
+                return _errorCode;
+            }
+            set
+            {
+                SetProperty(ref _errorCode, value);
+            }
         }
 
+        private string _errorMessage;
         public string ErrorMessage
+        {
+            get
+            {
+                return _errorMessage;
+            }
+            set
+            {
+                SetProperty(ref _errorMessage, value);
+            }
+        }
+
+        public bool ConnectorChanged
         {
             get; set;
         }
 
+        protected override void Item_PropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            if (IsLoaded == false) { return; }
+
+            switch (e.PropertyName)
+            {               
+                case nameof(ConnectorValue):
+                case nameof(ConnectorString):
+                case nameof(ConnectorValueType):
+                case nameof(ErrorCode):
+                case nameof(ErrorMessage):
+                    RaisePropertyChanged(nameof(ConnectorChanged));
+                    break;
+            }
+           
+        }
+
         public override bool CanAttachTo(FullyCreatedConnectorInfo port)
         {
             if (!base.CanAttachTo(port))
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/LogicalGateItemViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/LogicalGateItemViewModelBase.cs
index eece016..6b9e993 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/LogicalGateItemViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/LogicalGateItemViewModelBase.cs
@@ -7,6 +7,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Input;
 using System.Windows.Media;
+using AIStudio.Wpf.DiagramDesigner.Enums;
 using AIStudio.Wpf.DiagramDesigner.Models;
 
 namespace AIStudio.Wpf.DiagramDesigner
@@ -276,6 +277,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                 var connector = GetSourceItem(input.Value);
                 if (connector == null)
                 {
+                    input.Value.ErrorCode = ConnectorErrorCode.None;
                     continue;
                 }
 
@@ -301,9 +303,9 @@ namespace AIStudio.Wpf.DiagramDesigner
                     }
                     else
                     {
-                        input.Value.ConnectorError = true;
+                        input.Value.ErrorCode = ConnectorErrorCode.ConnErr;
                         input.Value.ErrorMessage = "连接类型不匹配";
-                        input.Value.ColorViewModel.FillColor.Color = Colors.Orange;
+                        input.Value.ColorViewModel.FillColor.Color = Colors.DarkRed;
                     }
                 }
             }
@@ -313,9 +315,9 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             foreach (var output in Output)
             {
-                if (output.Value.ValueError)
+                if (output.Value.ErrorCode != ConnectorErrorCode.None)
                 {
-                    output.Value.ColorViewModel.FillColor.Color = Colors.Orange;
+                    output.Value.ColorViewModel.FillColor.Color = Colors.DarkRed;
                 }
                 else if (output.Value.ConnectorValueType == ConnectorValueType.Bool)
                 {