diff --git a/Editor/Localization/LocalizationTableWindow/TreeView/TableSheetTreeView.cs b/Editor/Localization/LocalizationTableWindow/TreeView/TableSheetTreeView.cs
index ae81fcc..4eec34b 100644
--- a/Editor/Localization/LocalizationTableWindow/TreeView/TableSheetTreeView.cs
+++ b/Editor/Localization/LocalizationTableWindow/TreeView/TableSheetTreeView.cs
@@ -152,6 +152,12 @@ namespace AlicizaX.Localization.Editor
                     ContextSelectedID = -1;
                     Reload();
                 });
+                menu.AddItem(new GUIContent("Copy"), false, () =>
+                {
+                    CopyEntryToBiliboard(parentSection.Section, item.Item);
+                    ContextSelectedID = -1;
+                    Reload();
+                });
             }
 
             menu.ShowAsContext();
@@ -428,6 +434,15 @@ namespace AlicizaX.Localization.Editor
             Reload();
         }
 
+
+        private void CopyEntryToBiliboard(SheetSectionTreeView section, SheetItemTreeView sheetItem)
+        {
+            if (!HasFocus())
+                return;
+            string combineKey = $"{section.Name}.{sheetItem.Key}";
+            GUIUtility.systemCopyBuffer = combineKey;
+        }
+
         private void DeleteLstrEntry(SheetSectionTreeView section, SheetItemTreeView sheetItem)
         {
             if (!HasFocus())