diff --git a/ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml.cs b/ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml.cs
index 92860a5..ae2286b 100644
--- a/ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml.cs
+++ b/ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml.cs
@@ -36,6 +36,21 @@ public partial class MapEditorPage : ContentPage
         MapView.Drawable = _drawable;
         MapView.SizeChanged += OnMapViewSizeChanged;
         TryAutoLoad();
+        LoadGalaxyMapAsync();
+    }
+
+    // ----- galaxy map background -----
+
+    private async void LoadGalaxyMapAsync()
+    {
+        _drawable.BackgroundImage = await MapBackground.LoadAsync();
+        MapView.Invalidate();
+    }
+
+    private void OnBackgroundToggled(object? sender, CheckedChangedEventArgs e)
+    {
+        _drawable.ShowBackground = e.Value;
+        MapView.Invalidate();
     }
 
     // ----- view transform -----