diff --git a/Runtime/Component/Main/DataZoom.cs b/Runtime/Component/Main/DataZoom.cs
index 1c11bbe5..08e8ee8c 100644
--- a/Runtime/Component/Main/DataZoom.cs
+++ b/Runtime/Component/Main/DataZoom.cs
@@ -690,6 +690,7 @@ namespace XCharts
 
         public void DrawTop(VertexHelper vh)
         {
+            if (chart == null) return;
             foreach (var dataZoom in chart.dataZooms)
             {
                 DrawDataZoomSlider(vh, dataZoom);