diff --git a/Runtime/Component/Legend/LegendHandler.cs b/Runtime/Component/Legend/LegendHandler.cs
index f923aca9..b2852b51 100644
--- a/Runtime/Component/Legend/LegendHandler.cs
+++ b/Runtime/Component/Legend/LegendHandler.cs
@@ -93,14 +93,14 @@ namespace XCharts.Runtime
                         int clickedIndex = int.Parse(temp[0]);
                         if (legend.selectedMode == Legend.SelectedMode.Multiple)
                         {
-                            chart.OnLegendButtonClick(clickedIndex, selectedName, !chart.IsActiveByLegend(selectedName));
+                            OnLegendButtonClick(legend, clickedIndex, selectedName, !chart.IsActiveByLegend(selectedName));
                         }
                         else
                         {
                             var btnList = legend.context.buttonList.Values.ToArray();
                             if (btnList.Length == 1)
                             {
-                                chart.OnLegendButtonClick(0, selectedName, !chart.IsActiveByLegend(selectedName));
+                                OnLegendButtonClick(legend, 0, selectedName, !chart.IsActiveByLegend(selectedName));
                             }
                             else
                             {
@@ -109,7 +109,7 @@ namespace XCharts.Runtime
                                     temp = btnList[n].name.Split('_');
                                     selectedName = btnList[n].legendName;
                                     var index = btnList[n].index;
-                                    chart.OnLegendButtonClick(n, selectedName, index == clickedIndex ? true : false);
+                                    OnLegendButtonClick(legend, n, selectedName, index == clickedIndex ? true : false);
                                 }
                             }
                         }
@@ -120,7 +120,7 @@ namespace XCharts.Runtime
                         var temp = item.button.name.Split('_');
                         string selectedName = temp[1];
                         int index = int.Parse(temp[0]);
-                        chart.OnLegendButtonEnter(index, selectedName);
+                        OnLegendButtonEnter(legend, index, selectedName);
                     });
                     ChartHelper.AddEventListener(item.button.gameObject, EventTriggerType.PointerExit, (data) =>
                     {
@@ -128,7 +128,7 @@ namespace XCharts.Runtime
                         var temp = item.button.name.Split('_');
                         string selectedName = temp[1];
                         int index = int.Parse(temp[0]);
-                        chart.OnLegendButtonExit(index, selectedName);
+                        OnLegendButtonExit(legend, index, selectedName);
                     });
                 }
                 LegendHelper.ResetItemPosition(legend, chart.chartPosition, chart.chartWidth, chart.chartHeight);
@@ -136,6 +136,27 @@ namespace XCharts.Runtime
             legend.refreshComponent();
         }
 
+        private void OnLegendButtonClick(Legend legend, int index, string legendName, bool show)
+        {
+            chart.OnLegendButtonClick(index, legendName, show);
+            if (chart.onLegendClick != null)
+                chart.onLegendClick(legend, index, legendName, show);
+        }
+
+        private void OnLegendButtonEnter(Legend legend, int index, string legendName)
+        {
+            chart.OnLegendButtonEnter(index, legendName);
+            if (chart.onLegendEnter != null)
+                chart.onLegendEnter(legend, index, legendName);
+        }
+
+        private void OnLegendButtonExit(Legend legend, int index, string legendName)
+        {
+            chart.OnLegendButtonExit(index, legendName);
+            if (chart.onLegendExit != null)
+                chart.onLegendExit(legend, index, legendName);
+        }
+
         private void DrawLegend(VertexHelper vh)
         {
             if (chart.series.Count == 0) return;
diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index 491577a3..782a2ca6 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -105,7 +105,21 @@ namespace XCharts.Runtime
         /// 坐标轴变更数据索引时回调。参数：axis, dataIndex/dataValue
         /// </summary>
         public Action<Axis, double> onAxisPointerValueChanged { set { m_OnAxisPointerValueChanged = value; } get { return m_OnAxisPointerValueChanged; } }
-
+        /// <summary>
+        /// the callback function of click legend.
+        /// |点击图例按钮回调。参数：legendIndex, legendName, show
+        /// </summary>
+        public Action<Legend, int, string, bool> onLegendClick { set { m_OnLegendClick = value; } internal get { return m_OnLegendClick; } }
+        /// <summary>
+        /// the callback function of enter legend.
+        /// |鼠标进入图例回调。参数：legendIndex, legendName
+        /// </summary>
+        public Action<Legend, int, string> onLegendEnter { set { m_OnLegendEnter = value; } internal get { return m_OnLegendEnter; } }
+        /// <summary>
+        /// the callback function of exit legend.
+        /// |鼠标退出图例回调。参数：legendIndex, legendName
+        /// </summary>
+        public Action<Legend, int, string> onLegendExit { set { m_OnLegendExit = value; } internal get { return m_OnLegendExit; } }
         public void Init(bool defaultChart = true)
         {
             if (defaultChart)
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index 50afe53e..5cfc96a3 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -88,6 +88,9 @@ namespace XCharts.Runtime
         protected Action<PointerEventData, int, int> m_OnPointerClickPie;
         protected Action<PointerEventData, int> m_OnPointerClickBar;
         protected Action<Axis, double> m_OnAxisPointerValueChanged;
+        protected Action<Legend, int, string, bool> m_OnLegendClick;
+        protected Action<Legend, int, string> m_OnLegendEnter;
+        protected Action<Legend, int, string> m_OnLegendExit;
 
         protected CustomDrawGaugePointerFunction m_CustomDrawGaugePointerFunction;