diff --git a/Editor/ChildComponents/SettingsDrawer.cs b/Editor/ChildComponents/SettingsDrawer.cs
index ac798997..4608af10 100644
--- a/Editor/ChildComponents/SettingsDrawer.cs
+++ b/Editor/ChildComponents/SettingsDrawer.cs
@@ -22,6 +22,7 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_MaxPainter");
                 PropertyField(prop, "m_BasePainterMaterial");
                 PropertyField(prop, "m_SeriePainterMaterial");
+                PropertyField(prop, "m_UpperPainterMaterial");
                 PropertyField(prop, "m_TopPainterMaterial");
                 PropertyField(prop, "m_LineSmoothStyle");
                 PropertyField(prop, "m_LineSmoothness");
diff --git a/Editor/ChildComponents/TextPaddingDrawer.cs b/Editor/ChildComponents/TextPaddingDrawer.cs
index 608605d5..0aa6c9f8 100644
--- a/Editor/ChildComponents/TextPaddingDrawer.cs
+++ b/Editor/ChildComponents/TextPaddingDrawer.cs
@@ -4,8 +4,8 @@ using XCharts.Runtime;
 
 namespace XCharts.Editor
 {
-    [CustomPropertyDrawer(typeof(TextPadding), true)]
-    public class TextPaddingDrawer : BasePropertyDrawer
+    [CustomPropertyDrawer(typeof(Padding), true)]
+    public class PaddingDrawer : BasePropertyDrawer
     {
         public override string ClassName { get { return "Padding"; } }
         public override void OnGUI(Rect pos, SerializedProperty prop, GUIContent label)
@@ -22,4 +22,9 @@ namespace XCharts.Editor
             }
         }
     }
+
+    [CustomPropertyDrawer(typeof(TextPadding), true)]
+    public class TextPaddingDrawer : PaddingDrawer
+    {
+    }
 }
\ No newline at end of file
diff --git a/Editor/MainComponents/LegendEditor.cs b/Editor/MainComponents/LegendEditor.cs
index 34fc3242..db3d8063 100644
--- a/Editor/MainComponents/LegendEditor.cs
+++ b/Editor/MainComponents/LegendEditor.cs
@@ -20,6 +20,8 @@ namespace XCharts.Editor
             PropertyField("m_Formatter");
             PropertyField("m_Location");
             PropertyField("m_LabelStyle");
+            PropertyField("m_Background");
+            PropertyField("m_Padding");
             PropertyListField("m_Icons");
             PropertyListField("m_Colors");
             PropertyListField("m_Data");
diff --git a/Runtime/Component/Child/Padding.cs b/Runtime/Component/Child/Padding.cs
new file mode 100644
index 00000000..59a6b2bb
--- /dev/null
+++ b/Runtime/Component/Child/Padding.cs
@@ -0,0 +1,79 @@
+using System;
+using UnityEngine;
+
+namespace XCharts.Runtime
+{
+    /// <summary>
+    /// padding setting of item or text.
+    /// |边距设置。
+    /// </summary>
+    [Serializable]
+    public class Padding : ChildComponent
+    {
+        [SerializeField] protected bool m_Show = true;
+        [SerializeField] protected float m_Top = 2;
+        [SerializeField] protected float m_Right = 4;
+        [SerializeField] protected float m_Left = 4;
+        [SerializeField] protected float m_Bottom = 2;
+
+        public Padding() { }
+
+        public Padding(float top, float right, float bottom, float left)
+        {
+            SetPadding(top, right, bottom, left);
+        }
+
+        public void SetPadding(float top, float right, float bottom, float left)
+        {
+            m_Top = top;;
+            m_Right = right;
+            m_Bottom = bottom;
+            m_Left = left;
+        }
+        /// <summary>
+        /// show padding.
+        /// 是否显示。
+        /// </summary>
+        public bool show
+        {
+            get { return m_Show; }
+            set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// padding of top.
+        /// |顶部间距。
+        /// </summary>
+        public float top
+        {
+            get { return m_Top; }
+            set { if (PropertyUtil.SetStruct(ref m_Top, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// padding of right.
+        /// |右部间距。
+        /// </summary>
+        public float right
+        {
+            get { return m_Right; }
+            set { if (PropertyUtil.SetStruct(ref m_Right, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// padding of bottom.
+        /// |底部间距。
+        /// </summary>
+        public float bottom
+        {
+            get { return m_Bottom; }
+            set { if (PropertyUtil.SetStruct(ref m_Bottom, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// padding of left.
+        /// |左边间距。
+        /// </summary>
+        public float left
+        {
+            get { return m_Left; }
+            set { if (PropertyUtil.SetStruct(ref m_Left, value)) SetComponentDirty(); }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Runtime/Component/Child/Padding.cs.meta b/Runtime/Component/Child/Padding.cs.meta
new file mode 100644
index 00000000..9b9851fc
--- /dev/null
+++ b/Runtime/Component/Child/Padding.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c4249907274734533ba65edb14987472
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Component/Child/TextPadding.cs b/Runtime/Component/Child/TextPadding.cs
index 7031f4f0..bcbeab7f 100644
--- a/Runtime/Component/Child/TextPadding.cs
+++ b/Runtime/Component/Child/TextPadding.cs
@@ -8,72 +8,13 @@ namespace XCharts.Runtime
     /// |文本的内边距设置。
     /// </summary>
     [Serializable]
-    public class TextPadding : ChildComponent
+    public class TextPadding : Padding
     {
-        [SerializeField] private bool m_Show = true;
-        [SerializeField] private float m_Top = 2;
-        [SerializeField] private float m_Right = 4;
-        [SerializeField] private float m_Left = 4;
-        [SerializeField] private float m_Bottom = 2;
-
         public TextPadding() { }
 
         public TextPadding(float top, float right, float bottom, float left)
         {
             SetPadding(top, right, bottom, left);
         }
-
-        public void SetPadding(float top, float right, float bottom, float left)
-        {
-            m_Top = top;;
-            m_Right = right;
-            m_Bottom = bottom;
-            m_Left = left;
-        }
-        /// <summary>
-        /// show padding.
-        /// 是否显示。
-        /// </summary>
-        public bool show
-        {
-            get { return m_Show; }
-            set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetComponentDirty(); }
-        }
-        /// <summary>
-        /// padding of top.
-        /// |顶部间距。
-        /// </summary>
-        public float top
-        {
-            get { return m_Top; }
-            set { if (PropertyUtil.SetStruct(ref m_Top, value)) SetComponentDirty(); }
-        }
-        /// <summary>
-        /// padding of right.
-        /// |右部间距。
-        /// </summary>
-        public float right
-        {
-            get { return m_Right; }
-            set { if (PropertyUtil.SetStruct(ref m_Right, value)) SetComponentDirty(); }
-        }
-        /// <summary>
-        /// padding of bottom.
-        /// |底部间距。
-        /// </summary>
-        public float bottom
-        {
-            get { return m_Bottom; }
-            set { if (PropertyUtil.SetStruct(ref m_Bottom, value)) SetComponentDirty(); }
-        }
-        /// <summary>
-        /// padding of left.
-        /// |左边间距。
-        /// </summary>
-        public float left
-        {
-            get { return m_Left; }
-            set { if (PropertyUtil.SetStruct(ref m_Left, value)) SetComponentDirty(); }
-        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Component/Comment/CommentHander.cs b/Runtime/Component/Comment/CommentHander.cs
index f1c93ab3..92c17536 100644
--- a/Runtime/Component/Comment/CommentHander.cs
+++ b/Runtime/Component/Comment/CommentHander.cs
@@ -53,7 +53,7 @@ namespace XCharts.Runtime
             }
         }
 
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             for (int i = 0; i < component.items.Count; i++)
             {
diff --git a/Runtime/Component/DataZoom/DataZoomHandler.cs b/Runtime/Component/DataZoom/DataZoomHandler.cs
index 6fce8896..aa9e7644 100644
--- a/Runtime/Component/DataZoom/DataZoomHandler.cs
+++ b/Runtime/Component/DataZoom/DataZoomHandler.cs
@@ -19,7 +19,7 @@ namespace XCharts.Runtime
         public override void InitComponent()
         {
             var dataZoom = component;
-            dataZoom.painter = chart.m_PainterTop;
+            dataZoom.painter = chart.m_PainterUpper;
             dataZoom.refreshComponent = delegate()
             {
                 var dataZoomObject = ChartHelper.AddObject(s_DefaultDataZoom + dataZoom.index, chart.transform,
@@ -62,7 +62,7 @@ namespace XCharts.Runtime
             CheckDataZoomLabel(component);
         }
 
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             if (chart == null)
                 return;
diff --git a/Runtime/Component/Mark/MarkAreaHandler.cs b/Runtime/Component/Mark/MarkAreaHandler.cs
index 9e1345b5..f7939418 100644
--- a/Runtime/Component/Mark/MarkAreaHandler.cs
+++ b/Runtime/Component/Mark/MarkAreaHandler.cs
@@ -39,7 +39,7 @@ namespace XCharts.Runtime
 
         private void InitMarkArea(MarkArea markArea)
         {
-            markArea.painter = chart.m_PainterTop;
+            markArea.painter = chart.m_PainterUpper;
             markArea.refreshComponent = delegate()
             {
                 var label = ChartHelper.AddChartLabel("label", m_MarkLineLabelRoot.transform, markArea.label, chart.theme.axis,
diff --git a/Runtime/Component/Mark/MarkLineHandler.cs b/Runtime/Component/Mark/MarkLineHandler.cs
index 5be581fc..cafbdcf2 100644
--- a/Runtime/Component/Mark/MarkLineHandler.cs
+++ b/Runtime/Component/Mark/MarkLineHandler.cs
@@ -19,7 +19,7 @@ namespace XCharts.Runtime
             InitMarkLine(component);
         }
 
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             DrawMarkLine(vh, component);
         }
@@ -69,7 +69,7 @@ namespace XCharts.Runtime
 
         private void InitMarkLineLabel(Serie serie, MarkLineData data, Color serieColor)
         {
-            data.painter = chart.m_PainterTop;
+            data.painter = chart.m_PainterUpper;
             data.refreshComponent = delegate()
             {
                 var textName = string.Format("markLine_{0}_{1}", serie.index, data.index);
diff --git a/Runtime/Component/Settings/Settings.cs b/Runtime/Component/Settings/Settings.cs
index 4d8bc804..1ae8d719 100644
--- a/Runtime/Component/Settings/Settings.cs
+++ b/Runtime/Component/Settings/Settings.cs
@@ -15,6 +15,7 @@ namespace XCharts.Runtime
         [SerializeField] protected bool m_ReversePainter = false;
         [SerializeField] protected Material m_BasePainterMaterial;
         [SerializeField] protected Material m_SeriePainterMaterial;
+        [SerializeField] protected Material m_UpperPainterMaterial;
         [SerializeField] protected Material m_TopPainterMaterial;
         [SerializeField][Range(1, 10)] protected float m_LineSmoothStyle = 3f;
         [SerializeField][Range(1f, 20)] protected float m_LineSmoothness = 2f;
@@ -58,7 +59,7 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetClass(ref m_SeriePainterMaterial, value)) SetComponentDirty(); }
         }
         /// <summary>
-        /// Top Pointer 材质球，设置后会影响Tooltip等。
+        /// Top Pointer 材质球。
         /// </summary>
         public Material topPainterMaterial
         {
@@ -66,6 +67,14 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetClass(ref m_TopPainterMaterial, value)) SetComponentDirty(); }
         }
         /// <summary>
+        /// Upper Pointer 材质球。
+        /// </summary>
+        public Material upperPainterMaterial
+        {
+            get { return m_UpperPainterMaterial; }
+            set { if (PropertyUtil.SetClass(ref m_UpperPainterMaterial, value)) SetComponentDirty(); }
+        }
+        /// <summary>
         /// Curve smoothing factor. By adjusting the smoothing coefficient, the curvature of the curve can be changed, 
         /// and different curves with slightly different appearance can be obtained.
         /// |曲线平滑系数。通过调整平滑系数可以改变曲线的曲率，得到外观稍微有变化的不同曲线。
@@ -134,6 +143,7 @@ namespace XCharts.Runtime
             m_MaxPainter = settings.maxPainter;
             m_BasePainterMaterial = settings.basePainterMaterial;
             m_SeriePainterMaterial = settings.seriePainterMaterial;
+            m_UpperPainterMaterial = settings.upperPainterMaterial;
             m_TopPainterMaterial = settings.topPainterMaterial;
             m_LineSmoothStyle = settings.lineSmoothStyle;
             m_LineSmoothness = settings.lineSmoothness;
diff --git a/Runtime/Component/Title/TitleHandler.cs b/Runtime/Component/Title/TitleHandler.cs
index 63e32940..a0437acb 100644
--- a/Runtime/Component/Title/TitleHandler.cs
+++ b/Runtime/Component/Title/TitleHandler.cs
@@ -24,7 +24,7 @@ namespace XCharts.Runtime
                 var titleObject = ChartHelper.AddObject(objName, chart.transform, anchorMin, anchorMax,
                     pivot, chart.chartSizeDelta);
                 title.gameObject = titleObject;
-                title.gameObject.transform.SetSiblingIndex(chart.m_PainterTop.transform.GetSiblingIndex() + 1);
+                title.gameObject.transform.SetSiblingIndex(chart.m_PainterUpper.transform.GetSiblingIndex() + 1);
                 anchorMin = title.location.runtimeAnchorMin;
                 anchorMax = title.location.runtimeAnchorMax;
                 pivot = title.location.runtimePivot;
diff --git a/Runtime/Component/Tooltip/TooltipHandler.cs b/Runtime/Component/Tooltip/TooltipHandler.cs
index e55d3670..75722240 100644
--- a/Runtime/Component/Tooltip/TooltipHandler.cs
+++ b/Runtime/Component/Tooltip/TooltipHandler.cs
@@ -26,14 +26,14 @@ namespace XCharts.Runtime
                 component.view.Update();
         }
 
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             DrawTooltipIndicator(vh, component);
         }
 
         private void InitTooltip(Tooltip tooltip)
         {
-            tooltip.painter = chart.m_PainterTop;
+            tooltip.painter = chart.m_PainterUpper;
             tooltip.refreshComponent = delegate()
             {
                 var objName = ChartCached.GetComponentObjectName(tooltip);
diff --git a/Runtime/Coord/Grid/GridCoordHandler.cs b/Runtime/Coord/Grid/GridCoordHandler.cs
index 03dec597..cf37bad7 100644
--- a/Runtime/Coord/Grid/GridCoordHandler.cs
+++ b/Runtime/Coord/Grid/GridCoordHandler.cs
@@ -57,7 +57,7 @@ namespace XCharts.Runtime
                 DrawCoord(vh, component);
             }
         }
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             if (SeriesHelper.IsAnyClipSerie(chart.series))
             {
diff --git a/Runtime/Coord/Parallel/ParallelCoordHandler.cs b/Runtime/Coord/Parallel/ParallelCoordHandler.cs
index 315e4779..2976b3f1 100644
--- a/Runtime/Coord/Parallel/ParallelCoordHandler.cs
+++ b/Runtime/Coord/Parallel/ParallelCoordHandler.cs
@@ -56,7 +56,7 @@ namespace XCharts.Runtime
                 DrawCoord(vh);
             }
         }
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             if (SeriesHelper.IsAnyClipSerie(chart.series))
             {
diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index 230af44a..3459b54a 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -84,7 +84,11 @@ namespace XCharts.Runtime
         /// </summary>
         public Action<VertexHelper, Serie> onDrawAfterSerie { set { m_OnDrawSerieAfter = value; } }
         /// <summary>
-        /// 自定义Top绘制回调。在绘制Tooltip前调用。
+        /// 自定义Upper层绘制回调。在绘制Tooltip前调用。
+        /// </summary>
+        public Action<VertexHelper> onDrawUpper { set { m_OnDrawUpper = value; } }
+        /// <summary>
+        /// 自定义Top层绘制回调。在绘制Tooltip前调用。
         /// </summary>
         public Action<VertexHelper> onDrawTop { set { m_OnDrawTop = value; } }
         /// <summary>
@@ -143,6 +147,7 @@ namespace XCharts.Runtime
             m_RefreshChart = true;
             if (m_Painter) m_Painter.Refresh();
             foreach (var painter in m_PainterList) painter.Refresh();
+            if (m_PainterUpper) m_PainterUpper.Refresh();
             if (m_PainterTop) m_PainterTop.Refresh();
         }
 
@@ -507,6 +512,19 @@ namespace XCharts.Runtime
             }
         }
 
+        /// <summary>
+        /// 设置Upper Painter的材质球
+        /// </summary>
+        /// <param name="material"></param>
+        public void SetUpperPainterMaterial(Material material)
+        {
+            settings.upperPainterMaterial = material;
+            if (m_PainterUpper != null)
+            {
+                m_PainterUpper.material = material;
+            }
+        }
+
         /// <summary>
         /// 设置Top Painter的材质球
         /// </summary>
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index 50b44db5..1be748e8 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -81,6 +81,7 @@ namespace XCharts.Runtime
         protected Action m_OnInit;
         protected Action m_OnUpdate;
         protected Action<VertexHelper> m_OnDrawBase;
+        protected Action<VertexHelper> m_OnDrawUpper;
         protected Action<VertexHelper> m_OnDrawTop;
         protected Action<VertexHelper, Serie> m_OnDrawSerieBefore;
         protected Action<VertexHelper, Serie> m_OnDrawSerieAfter;
@@ -96,8 +97,10 @@ namespace XCharts.Runtime
         internal bool m_CheckAnimation = false;
         internal protected List<string> m_LegendRealShowName = new List<string>();
         protected List<Painter> m_PainterList = new List<Painter>();
+        internal Painter m_PainterUpper;
         internal Painter m_PainterTop;
         internal int m_BasePainterVertCount;
+        internal int m_UpperPainterVertCount;
         internal int m_TopPainterVertCount;
 
         private ThemeType m_CheckTheme = 0;
@@ -201,6 +204,11 @@ namespace XCharts.Runtime
             m_PainterTop.Refresh();
         }
 
+        public void RefreshUpperPainter()
+        {
+            m_PainterUpper.Refresh();
+        }
+
         public void RefreshPainter(int index)
         {
             var painter = GetPainter(index);
@@ -218,7 +226,7 @@ namespace XCharts.Runtime
             base.RefreshPainter(painter);
             if (painter != null && painter.type == Painter.Type.Serie)
             {
-                m_PainterTop.Refresh();
+                m_PainterUpper.Refresh();
             }
         }
 
@@ -306,6 +314,10 @@ namespace XCharts.Runtime
                 serie.index = i;
                 SetPainterActive(i, true);
             }
+            if (transform.childCount - 3 != m_PainterTop.transform.GetSiblingIndex())
+            {
+                m_PainterTop.transform.SetSiblingIndex(transform.childCount - 3);
+            }
         }
 
         protected override void InitPainter()
@@ -328,6 +340,14 @@ namespace XCharts.Runtime
                 painter.transform.SetSiblingIndex(index + 1);
                 m_PainterList.Add(painter);
             }
+            m_PainterUpper = ChartHelper.AddPainterObject("painter_u", transform, m_GraphMinAnchor,
+                m_GraphMaxAnchor, m_GraphPivot, sizeDelta, chartHideFlags, 2 + settings.maxPainter);
+            m_PainterUpper.type = Painter.Type.Top;
+            m_PainterUpper.onPopulateMesh = OnDrawPainterUpper;
+            m_PainterUpper.SetActive(true, m_DebugInfo.showAllChartObject);
+            m_PainterUpper.material = settings.topPainterMaterial;
+            m_PainterUpper.transform.SetSiblingIndex(settings.maxPainter + 1);
+
             m_PainterTop = ChartHelper.AddPainterObject("painter_t", transform, m_GraphMinAnchor,
                 m_GraphMaxAnchor, m_GraphPivot, sizeDelta, chartHideFlags, 2 + settings.maxPainter);
             m_PainterTop.type = Painter.Type.Top;
@@ -372,6 +392,7 @@ namespace XCharts.Runtime
             if (m_Painter == null) return;
             m_Painter.CheckRefresh();
             foreach (var painter in m_PainterList) painter.CheckRefresh();
+            if (m_PainterUpper != null) m_PainterUpper.CheckRefresh();
             if (m_PainterTop != null) m_PainterTop.CheckRefresh();
         }
 
@@ -543,6 +564,7 @@ namespace XCharts.Runtime
             var maxPainter = settings.maxPainter;
             var maxSeries = m_Series.Count;
             var rate = Mathf.CeilToInt(maxSeries * 1.0f / maxPainter);
+            m_PainterUpper.Refresh();
             m_PainterTop.Refresh();
             m_DebugInfo.refreshCount++;
             for (int i = painter.index * rate; i < (painter.index + 1) * rate && i < maxSeries; i++)
@@ -574,6 +596,18 @@ namespace XCharts.Runtime
             }
         }
 
+        protected virtual void OnDrawPainterUpper(VertexHelper vh, Painter painter)
+        {
+            vh.Clear();
+            DrawPainterUpper(vh);
+            foreach (var draw in m_ComponentHandlers) draw.DrawUpper(vh);
+            if (m_OnDrawUpper != null)
+            {
+                m_OnDrawUpper(vh);
+            }
+            m_UpperPainterVertCount = vh.currentVertCount;
+        }
+
         protected virtual void OnDrawPainterTop(VertexHelper vh, Painter painter)
         {
             vh.Clear();
@@ -588,6 +622,12 @@ namespace XCharts.Runtime
 
         protected virtual void DrawPainterSerie(VertexHelper vh, Serie serie) { }
 
+        protected virtual void DrawPainterUpper(VertexHelper vh)
+        {
+            foreach (var handler in m_SerieHandlers)
+                handler.DrawUpper(vh);
+        }
+
         protected virtual void DrawPainterTop(VertexHelper vh)
         {
             foreach (var handler in m_SerieHandlers)
diff --git a/Runtime/Internal/Basic/MainComponent.cs b/Runtime/Internal/Basic/MainComponent.cs
index a0834de1..61159b30 100644
--- a/Runtime/Internal/Basic/MainComponent.cs
+++ b/Runtime/Internal/Basic/MainComponent.cs
@@ -96,6 +96,7 @@ namespace XCharts.Runtime
         public virtual void CheckComponent(StringBuilder sb) { }
         public virtual void Update() { }
         public virtual void DrawBase(VertexHelper vh) { }
+        public virtual void DrawUpper(VertexHelper vh) { }
         public virtual void DrawTop(VertexHelper vh) { }
         public virtual void OnSerieDataUpdate(int serieIndex) { }
         public virtual void OnPointerClick(PointerEventData eventData) { }
diff --git a/Runtime/Internal/Object/LegendItem.cs b/Runtime/Internal/Object/LegendItem.cs
index 9a6f7540..95194bb6 100644
--- a/Runtime/Internal/Object/LegendItem.cs
+++ b/Runtime/Internal/Object/LegendItem.cs
@@ -13,6 +13,7 @@ namespace XCharts.Runtime
         private Button m_Button;
         private Image m_Icon;
         private ChartText m_Text;
+        private Image m_Background;
         private Image m_TextBackground;
         private RectTransform m_Rect;
         private RectTransform m_IconRect;
@@ -53,7 +54,7 @@ namespace XCharts.Runtime
                 }
                 else
                 {
-                    return 0;
+                    return m_Text.GetPreferredHeight();
                 }
             }
         }
@@ -64,6 +65,7 @@ namespace XCharts.Runtime
             m_Button = obj.GetComponent<Button>();
             m_Rect = obj.GetComponent<RectTransform>();
             m_Icon = obj.transform.Find("icon").gameObject.GetComponent<Image>();
+            m_Background = obj.GetComponent<Image>();
             m_TextBackground = obj.transform.Find("content").gameObject.GetComponent<Image>();
             m_Text = new ChartText(obj);
             m_IconRect = m_Icon.gameObject.GetComponent<RectTransform>();
@@ -172,7 +174,8 @@ namespace XCharts.Runtime
 
         public bool SetContent(string content)
         {
-            if (m_Text != null && !m_Text.GetText().Equals(content))
+            if (m_Text == null) return false;
+            if (!m_Text.GetText().Equals(content))
             {
                 m_Text.SetText(content);
                 if (m_LabelAutoSize)
@@ -186,11 +189,13 @@ namespace XCharts.Runtime
                         m_TextRect.anchoredPosition3D = new Vector3(m_LabelPaddingLeftRight, 0);
                         m_TextBackgroundRect.sizeDelta = new Vector2(m_Text.GetPreferredWidth() + m_LabelPaddingLeftRight * 2,
                             m_Text.GetPreferredHeight() + m_LabelPaddingTopBottom * 2 - 4);
-                        m_Rect.sizeDelta = new Vector3(width, height);
+
                     }
+                    m_Rect.sizeDelta = new Vector3(width, height);
                     return sizeChange;
                 }
             }
+            m_Rect.sizeDelta = new Vector3(width, height);
             return false;
         }
 
@@ -209,5 +214,10 @@ namespace XCharts.Runtime
                 m_GameObject.SetActive(active);
             }
         }
+
+        public void SetBackground(ImageStyle imageStyle)
+        {
+            ChartHelper.SetBackground(m_Background, imageStyle);
+        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Internal/Utilities/ChartHelper.cs b/Runtime/Internal/Utilities/ChartHelper.cs
index c254007c..0a60f646 100644
--- a/Runtime/Internal/Utilities/ChartHelper.cs
+++ b/Runtime/Internal/Utilities/ChartHelper.cs
@@ -314,6 +314,22 @@ namespace XCharts.Runtime
             return img;
         }
 
+        public static void SetBackground(Image background, ImageStyle imageStyle)
+        {
+            if (background == null) return;
+            if (imageStyle.show)
+            {
+                background.sprite = imageStyle.sprite;
+                background.color = imageStyle.color;
+                background.type = imageStyle.type;
+            }
+            else
+            {
+                background.sprite = null;
+                background.color = Color.clear;
+            }
+        }
+
         public static ChartLabel AddAxisLabelObject(int total, int index, string name, Transform parent,
             Vector2 sizeDelta, Axis axis, ComponentTheme theme,
             string content, Color autoColor, TextAnchor autoAlignment = TextAnchor.MiddleCenter)
diff --git a/Runtime/Serie/Line/LineHandler.cs b/Runtime/Serie/Line/LineHandler.cs
index f15ba49e..889fb776 100644
--- a/Runtime/Serie/Line/LineHandler.cs
+++ b/Runtime/Serie/Line/LineHandler.cs
@@ -48,7 +48,7 @@ namespace XCharts.Runtime
             }
         }
 
-        public override void DrawTop(VertexHelper vh)
+        public override void DrawUpper(VertexHelper vh)
         {
             if (serie.IsUseCoord<GridCoord>())
             {
diff --git a/Runtime/Serie/SerieHandler.cs b/Runtime/Serie/SerieHandler.cs
index 8a2594b8..f60f811f 100644
--- a/Runtime/Serie/SerieHandler.cs
+++ b/Runtime/Serie/SerieHandler.cs
@@ -18,6 +18,7 @@ namespace XCharts.Runtime
         public virtual void Update() { }
         public virtual void DrawBase(VertexHelper vh) { }
         public virtual void DrawSerie(VertexHelper vh) { }
+        public virtual void DrawUpper(VertexHelper vh) { }
         public virtual void DrawTop(VertexHelper vh) { }
         public virtual void OnPointerClick(PointerEventData eventData) { }
         public virtual void OnPointerDown(PointerEventData eventData) { }