diff --git a/CHANGELOG.md b/CHANGELOG.md
index bfe99043..e1870a41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 
 # 更新日志
 
+* (2020.01.08) 增加`Mask`遮罩遮挡支持
 * (2019.12.21) 增加`Tooltip`的单个数据项和标题的字符串模版格式器
 * (2019.12.21) 增加`DataZoom`的最小显示数据个数`minShowNum`
 * (2019.12.20) 增加`Demo40_Radar.cs`雷达图代码操作`Demo`
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index 0534b14d..362e15af 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -30,7 +30,7 @@ namespace XCharts
         Vertical
     }
 
-    public partial class BaseChart : Graphic, IPointerDownHandler, IPointerUpHandler,
+    public partial class BaseChart : MaskableGraphic, IPointerDownHandler, IPointerUpHandler,
         IPointerEnterHandler, IPointerExitHandler, IBeginDragHandler,
         IDragHandler, IEndDragHandler, IScrollHandler
     {