diff --git a/src/UI/WPF/ViewModels/AliasNodeViewModel.cs b/src/UI/WPF/ViewModels/AliasNodeViewModel.cs
index 8321c58..7108813 100644
--- a/src/UI/WPF/ViewModels/AliasNodeViewModel.cs
+++ b/src/UI/WPF/ViewModels/AliasNodeViewModel.cs
@@ -47,8 +47,8 @@ namespace NavisworksTransport.UI.WPF.ViewModels
             {
                 _alias = value;
                 HasAlias = !string.IsNullOrEmpty(value);
-                // 更新显示文本
-                DisplayName = HasAlias ? value : (OriginalName ?? "?");
+                // 更新显示文本：别名 [原名]
+                DisplayName = HasAlias ? value : (_originalName ?? "?");
                 OnPropertyChanged(nameof(Alias));
             }
         }
@@ -62,9 +62,9 @@ namespace NavisworksTransport.UI.WPF.ViewModels
                 if (_isEditing == value) return;
                 _isEditing = value;
                 OnPropertyChanged(nameof(IsEditing));
-                // 进入编辑时初始化 EditValue 为当前显示名
+                // 进入编辑时初始化 EditValue 为当前别名（无别名用原名）
                 if (value)
-                    EditValue = DisplayName;
+                    EditValue = HasAlias ? Alias : (OriginalName ?? "");
             }
         }
 
diff --git a/src/UI/WPF/Views/AliasTreeControl.xaml b/src/UI/WPF/Views/AliasTreeControl.xaml
index fd05572..61213f4 100644
--- a/src/UI/WPF/Views/AliasTreeControl.xaml
+++ b/src/UI/WPF/Views/AliasTreeControl.xaml
@@ -18,33 +18,62 @@
             <HierarchicalDataTemplate DataType="{x:Type vm:AliasNodeViewModel}" 
                                        ItemsSource="{Binding Children}">
                 <Grid VerticalAlignment="Center">
-                    <!-- 显示模式 -->
-                    <TextBlock Text="{Binding DisplayName}"
-                               FontSize="12" TextTrimming="CharacterEllipsis" MaxWidth="200"
-                               FontWeight="SemiBold">
-                        <TextBlock.Style>
-                            <Style TargetType="TextBlock">
-                                <Setter Property="Foreground" Value="#FF1A1A1A"/>
-                                <Setter Property="FontStyle" Value="Normal"/>
+                    <!-- 显示模式：StackPanel 包含别名（红色）+ [原文]（黑色） -->
+                    <StackPanel Orientation="Horizontal">
+                        <StackPanel.Style>
+                            <Style TargetType="StackPanel">
                                 <Setter Property="Visibility" Value="Visible"/>
                                 <Style.Triggers>
-                                    <DataTrigger Binding="{Binding HasAlias}" Value="True">
-                                        <Setter Property="Foreground" Value="#FFC62828"/>
-                                    </DataTrigger>
-                                    <DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" Value="True">
-                                        <Setter Property="Foreground" Value="White"/>
-                                    </DataTrigger>
-                                    <DataTrigger Binding="{Binding IsOrphan}" Value="True">
-                                        <Setter Property="TextDecorations" Value="Strikethrough"/>
-                                        <Setter Property="Foreground" Value="#FFAAAAAA"/>
-                                    </DataTrigger>
                                     <DataTrigger Binding="{Binding IsEditing}" Value="True">
                                         <Setter Property="Visibility" Value="Collapsed"/>
                                     </DataTrigger>
                                 </Style.Triggers>
                             </Style>
-                        </TextBlock.Style>
-                    </TextBlock>
+                        </StackPanel.Style>
+                        <!-- 别名/原名 -->
+                        <TextBlock Text="{Binding DisplayName}"
+                                   FontSize="12" FontWeight="SemiBold"
+                                   TextTrimming="CharacterEllipsis" MaxWidth="140">
+                            <TextBlock.Style>
+                                <Style TargetType="TextBlock">
+                                    <Setter Property="Foreground" Value="#FF1A1A1A"/>
+                                    <Style.Triggers>
+                                        <DataTrigger Binding="{Binding HasAlias}" Value="True">
+                                            <Setter Property="Foreground" Value="#FFC62828"/>
+                                        </DataTrigger>
+                                        <DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" Value="True">
+                                            <Setter Property="Foreground" Value="White"/>
+                                        </DataTrigger>
+                                        <DataTrigger Binding="{Binding IsOrphan}" Value="True">
+                                            <Setter Property="TextDecorations" Value="Strikethrough"/>
+                                            <Setter Property="Foreground" Value="#FFAAAAAA"/>
+                                        </DataTrigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </TextBlock.Style>
+                        </TextBlock>
+                        <!-- [原文] 后缀，黑色加粗 -->
+                        <TextBlock FontSize="12" FontWeight="SemiBold"
+                                   VerticalAlignment="Center">
+                            <TextBlock.Style>
+                                <Style TargetType="TextBlock">
+                                    <Setter Property="Foreground" Value="#FF1A1A1A"/>
+                                    <Setter Property="Visibility" Value="Collapsed"/>
+                                    <Style.Triggers>
+                                        <DataTrigger Binding="{Binding HasAlias}" Value="True">
+                                            <Setter Property="Visibility" Value="Visible"/>
+                                        </DataTrigger>
+                                        <DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" Value="True">
+                                            <Setter Property="Foreground" Value="White"/>
+                                        </DataTrigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </TextBlock.Style>
+                            <Run Text=" ["/>
+                            <Run Text="{Binding OriginalName}"/>
+                            <Run Text="]"/>
+                        </TextBlock>
+                    </StackPanel>
 
                     <!-- 编辑模式 -->
                     <TextBox Text="{Binding EditValue, UpdateSourceTrigger=PropertyChanged}"
diff --git a/src/UI/WPF/Views/AliasTreeControl.xaml.cs b/src/UI/WPF/Views/AliasTreeControl.xaml.cs
index b0ab3c7..0c385c3 100644
--- a/src/UI/WPF/Views/AliasTreeControl.xaml.cs
+++ b/src/UI/WPF/Views/AliasTreeControl.xaml.cs
@@ -127,7 +127,7 @@ namespace NavisworksTransport.UI.WPF.Views
         /// </summary>
         private void OnTreeViewSelected(AliasNodeViewModel node)
         {
-            LogManager.Info($"[别名树] 树点击: NodeKey={node.NodeKey}, OriginalName={node.OriginalName}, ModelItem={node.ModelItem?.DisplayName ?? "null"}");
+            LogManager.Info($"[别名树] OnTreeViewSelected 进入: {node.OriginalName}");
 
             _isInternalSelection = true;
             try
@@ -135,9 +135,11 @@ namespace NavisworksTransport.UI.WPF.Views
                 var doc = NavisApplication.ActiveDocument;
                 if (doc != null && node.ModelItem != null)
                 {
+                    LogManager.Info("[别名树] OnTreeViewSelected 设置NW选择");
                     var coll = new Autodesk.Navisworks.Api.ModelItemCollection { node.ModelItem };
                     doc.CurrentSelection.Clear();
                     doc.CurrentSelection.CopyFrom(coll);
+                    LogManager.Info("[别名树] OnTreeViewSelected 设置完成");
                 }
             }
             catch (Exception ex)
@@ -148,6 +150,7 @@ namespace NavisworksTransport.UI.WPF.Views
             {
                 _isInternalSelection = false;
             }
+            LogManager.Info("[别名树] OnTreeViewSelected 退出");
         }
 
         private void StartInlineEdit(AliasNodeViewModel node, TreeViewItem tvi)
@@ -630,6 +633,8 @@ namespace NavisworksTransport.UI.WPF.Views
                 if (_currentSelectionItem == null || _dataStore == null) return;
                 string input = TxtAliasInput.Text?.Trim();
                 if (string.IsNullOrEmpty(input)) return;
+                if (input == _currentSelectionItem?.DisplayName)
+                    input = null;
 
                 var identity = AliasNodeIdentity.FromModelItem(_currentSelectionItem);
                 LogManager.Info($"[别名树] 保存别名: {input}, NodeKey={identity.ToKey()}");
@@ -742,6 +747,8 @@ namespace NavisworksTransport.UI.WPF.Views
             if (textBox?.DataContext is AliasNodeViewModel node)
             {
                 string newAlias = textBox.Text?.Trim();
+                if (string.IsNullOrEmpty(newAlias) || newAlias == node.OriginalName)
+                    newAlias = null;
                 LogManager.Info($"[别名树] 内联编辑: {newAlias}, NodeKey={node.NodeKey}");
                 if (_dataStore != null)
                 {
@@ -751,7 +758,6 @@ namespace NavisworksTransport.UI.WPF.Views
                 node.Alias = newAlias;
                 node.IsEditing = false;
 
-                // 清除别名高亮 / 应用别名高亮
                 ApplyAliasHighlight(node.NodeKey, node.HasAlias);
             }
         }