diff --git a/src/UI/WPF/Views/AliasTreeControl.xaml.cs b/src/UI/WPF/Views/AliasTreeControl.xaml.cs
index a3a8cf3..468a27b 100644
--- a/src/UI/WPF/Views/AliasTreeControl.xaml.cs
+++ b/src/UI/WPF/Views/AliasTreeControl.xaml.cs
@@ -345,7 +345,7 @@ namespace NavisworksTransport.UI.WPF.Views
         {
             if (modelItem == null) return null;
 
-            string displayName = modelItem.DisplayName ?? "?";
+            string displayName = !string.IsNullOrEmpty(modelItem.DisplayName) ? modelItem.DisplayName : "几何对象";
             // 父节点 key 可能是完整格式 "IndexPath||DisplayPath"，也可能是 ".../name#N"
             // 只取纯 DisplayPath 部分（去掉 || 前缀和结尾的 #N 后缀）
             string parentPath = parentDisplayPath;
@@ -416,7 +416,7 @@ namespace NavisworksTransport.UI.WPF.Views
                 var nameCount = new Dictionary<string, int>();
                 foreach (var childItem in item.Children)
                 {
-                    string name = childItem.DisplayName ?? "?";
+                    string name = !string.IsNullOrEmpty(childItem.DisplayName) ? childItem.DisplayName : "几何对象";
                     nameCount.TryGetValue(name, out int count);
                     int siblingIdx = count;
                     nameCount[name] = count + 1;