diff --git a/Documentation~/en/api.md b/Documentation~/en/api.md
index e939a50c..89e77704 100644
--- a/Documentation~/en/api.md
+++ b/Documentation~/en/api.md
@@ -204,6 +204,7 @@ Inherits or Implemented: [BaseGraph](#basegraph),[ISerializationCallbackReceiver
 |CanAddChartComponent()||public bool CanAddChartComponent(Type type)|
 |CanAddSerie()||public bool CanAddSerie(Type type)|
 |CanAddSerie<T>()||public bool CanAddSerie<T>() where T : Serie|
+|CancelTooltip()|v3.7.0|public void CancelTooltip()<br/>cancel tooltip. |
 |CanMultipleComponent()||public bool CanMultipleComponent(Type type)|
 |ClampInChart()||public void ClampInChart(ref Vector3 pos)|
 |ClampInGrid()||public Vector3 ClampInGrid(GridCoord grid, Vector3 pos)|
@@ -319,6 +320,8 @@ Inherits or Implemented: [BaseGraph](#basegraph),[ISerializationCallbackReceiver
 |SetSeriePainterMaterial()||public void SetSeriePainterMaterial(Material material)<br/>设置Serie Painter的材质球 |
 |SetTopPainterMaterial()||public void SetTopPainterMaterial(Material material)<br/>设置Top Painter的材质球 |
 |SetUpperPainterMaterial()||public void SetUpperPainterMaterial(Material material)<br/>设置Upper Painter的材质球 |
+|TriggerTooltip()|v3.7.0|public bool TriggerTooltip(int dataIndex)<br/>trigger tooltip by data index. |
+|TriggerTooltip()|v3.7.0|public bool TriggerTooltip(Vector3 localPosition)<br/>trigger tooltip by chart local position. |
 |TryAddChartComponent()||public bool TryAddChartComponent(Type type)|
 |TryAddChartComponent&lt;T&gt;()||public bool TryAddChartComponent&lt;T&gt;() where T : MainComponent|
 |TryAddChartComponent&lt;T&gt;()||public bool TryAddChartComponent&lt;T&gt;(out T component) where T : MainComponent|
@@ -355,6 +358,8 @@ Inherits or Implemented: [MaskableGraphic](#maskablegraphic),[IPointerDownHandle
 |onPointerUp||public Action&lt;PointerEventData, BaseGraph&gt; onPointerUp<br/>鼠标弹起回调。 |
 |onScroll||public Action&lt;PointerEventData, BaseGraph&gt; onScroll<br/>鼠标滚动回调。 |
 |CheckWarning()||public string CheckWarning()<br/>检测警告信息。 |
+|LocalPointToScreenPoint()|v3.7.0|public Vector2 LocalPointToScreenPoint(Vector2 localPoint)<br/>chart local point to screen point. |
+|LocalPointToWorldPoint()|v3.7.0|public Vector2 LocalPointToWorldPoint(Vector2 localPoint)<br/>chart local point to world point. |
 |OnBeginDrag()||public virtual void OnBeginDrag(PointerEventData eventData)|
 |OnDrag()||public virtual void OnDrag(PointerEventData eventData)|
 |OnEndDrag()||public virtual void OnEndDrag(PointerEventData eventData)|
diff --git a/Documentation~/zh/api.md b/Documentation~/zh/api.md
index 0b1b60b7..0efaac1a 100644
--- a/Documentation~/zh/api.md
+++ b/Documentation~/zh/api.md
@@ -204,6 +204,7 @@ Inherits or Implemented: [BaseGraph](#basegraph),[ISerializationCallbackReceiver
 |CanAddChartComponent()||public bool CanAddChartComponent(Type type)|
 |CanAddSerie()||public bool CanAddSerie(Type type)|
 |CanAddSerie&lt;T&gt;()||public bool CanAddSerie&lt;T&gt;() where T : Serie|
+|CancelTooltip()|v3.7.0|public void CancelTooltip()<br/>取消Tooltip. |
 |CanMultipleComponent()||public bool CanMultipleComponent(Type type)|
 |ClampInChart()||public void ClampInChart(ref Vector3 pos)|
 |ClampInGrid()||public Vector3 ClampInGrid(GridCoord grid, Vector3 pos)|
@@ -319,6 +320,8 @@ Inherits or Implemented: [BaseGraph](#basegraph),[ISerializationCallbackReceiver
 |SetSeriePainterMaterial()||public void SetSeriePainterMaterial(Material material)<br/>设置Serie Painter的材质球 |
 |SetTopPainterMaterial()||public void SetTopPainterMaterial(Material material)<br/>设置Top Painter的材质球 |
 |SetUpperPainterMaterial()||public void SetUpperPainterMaterial(Material material)<br/>设置Upper Painter的材质球 |
+|TriggerTooltip()|v3.7.0|public bool TriggerTooltip(int dataIndex)<br/>尝试触发指定数据项的Tooltip. |
+|TriggerTooltip()|v3.7.0|public bool TriggerTooltip(Vector3 localPosition)<br/>在指定的位置尝试触发Tooltip. |
 |TryAddChartComponent()||public bool TryAddChartComponent(Type type)|
 |TryAddChartComponent&lt;T&gt;()||public bool TryAddChartComponent&lt;T&gt;() where T : MainComponent|
 |TryAddChartComponent&lt;T&gt;()||public bool TryAddChartComponent&lt;T&gt;(out T component) where T : MainComponent|
@@ -355,6 +358,8 @@ Inherits or Implemented: [MaskableGraphic](#maskablegraphic),[IPointerDownHandle
 |onPointerUp||public Action&lt;PointerEventData, BaseGraph&gt; onPointerUp<br/>鼠标弹起回调。 |
 |onScroll||public Action&lt;PointerEventData, BaseGraph&gt; onScroll<br/>鼠标滚动回调。 |
 |CheckWarning()||public string CheckWarning()<br/>检测警告信息。 |
+|LocalPointToScreenPoint()|v3.7.0|public Vector2 LocalPointToScreenPoint(Vector2 localPoint)<br/>图表内坐标转屏幕坐标。 |
+|LocalPointToWorldPoint()|v3.7.0|public Vector2 LocalPointToWorldPoint(Vector2 localPoint)<br/>图表内坐标转世界坐标。 |
 |OnBeginDrag()||public virtual void OnBeginDrag(PointerEventData eventData)|
 |OnDrag()||public virtual void OnDrag(PointerEventData eventData)|
 |OnEndDrag()||public virtual void OnEndDrag(PointerEventData eventData)|
diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index ceed1398..5c3e5963 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -66,6 +66,7 @@ slug: /changelog
 
 ## master
 
+* (2023.04.14) 增加`BaseChart`的`TriggerTooltip()`接口尝试触发`ToolTip`
 * (2023.04.12) 优化`RadarCood`设置`startAngle`时文本也跟随调整位置
 * (2023.04.12) 增加`Radar`对通配符`{b}`的支持
 * (2023.04.11) 修复动态添加组件时`Inspector`可能异常的问题
diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index fb8cf4d0..e999614b 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -667,5 +667,64 @@ namespace XCharts.Runtime
             SerieHelper.GetItemColor(out color, out toColor, serie, null, m_Theme);
             return color;
         }
+
+        /// <summary>
+        /// trigger tooltip by data index.
+        /// |尝试触发指定数据项的Tooltip.
+        /// </summary>
+        /// <param name="dataIndex">数据项索引</param>
+        /// <returns></returns>
+        [Since("v3.7.0")]
+        public bool TriggerTooltip(int dataIndex)
+        {
+            var serie = GetSerie(0);
+            if (serie == null) return false;
+            var dataPoints = serie.context.dataPoints;
+            var dataPoint = Vector3.zero;
+            if (dataPoints.Count == 0)
+            {
+                if (serie.dataCount == 0) return false;
+                dataIndex = dataIndex % serie.dataCount;
+                var serieData = serie.GetSerieData(dataIndex);
+                if (serieData == null) return false;
+                dataPoint = serie.GetSerieData(dataIndex).context.position;
+            }
+            else
+            {
+                dataIndex = dataIndex % dataPoints.Count;
+                dataPoint = dataPoints[dataIndex];
+            }
+            return TriggerTooltip(dataPoint);
+        }
+
+        /// <summary>
+        /// trigger tooltip by chart local position.
+        /// |在指定的位置尝试触发Tooltip.
+        /// </summary>
+        /// <param name="localPosition"></param>
+        /// <returns></returns>
+        [Since("v3.7.0")]
+        public bool TriggerTooltip(Vector3 localPosition)
+        {
+            var screenPoint = LocalPointToScreenPoint(localPosition);
+            var eventData = new PointerEventData(EventSystem.current);
+            eventData.position = screenPoint;
+            OnPointerEnter(eventData);
+            return true;
+        }
+
+        /// <summary>
+        /// cancel tooltip.
+        /// |取消Tooltip.
+        /// </summary>
+        [Since("v3.7.0")]
+        public void CancelTooltip()
+        {
+            var tooltip = GetChartComponent<Tooltip>();
+            if (tooltip != null)
+            {
+                tooltip.SetActive(false);
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Internal/BaseGraph.API.cs b/Runtime/Internal/BaseGraph.API.cs
index 499c24b1..553249f9 100644
--- a/Runtime/Internal/BaseGraph.API.cs
+++ b/Runtime/Internal/BaseGraph.API.cs
@@ -173,6 +173,32 @@ namespace XCharts.Runtime
             return true;
         }
 
+        /// <summary>
+        /// chart local point to screen point.
+        /// |图表内坐标转屏幕坐标。
+        /// </summary>
+        /// <param name="localPoint">图表内的坐标</param>
+        /// <returns>屏幕坐标</returns>
+        [Since("v3.7.0")]
+        public Vector2 LocalPointToScreenPoint(Vector2 localPoint)
+        {
+            var cam = canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera;
+            var wordPoint = rectTransform.TransformPoint(localPoint);
+            return RectTransformUtility.WorldToScreenPoint(cam, wordPoint);
+        }
+
+        /// <summary>
+        /// chart local point to world point.
+        /// |图表内坐标转世界坐标。
+        /// </summary>
+        /// <param name="localPoint">图表内的坐标</param>
+        /// <returns>世界坐标</returns>
+        [Since("v3.7.0")]
+        public Vector2 LocalPointToWorldPoint(Vector2 localPoint)
+        {
+            return rectTransform.TransformPoint(localPoint);
+        }
+
         /// <summary>
         /// 保存图表为图片。
         /// </summary>
diff --git a/Runtime/Serie/Pie/PieHandler.cs b/Runtime/Serie/Pie/PieHandler.cs
index 45bf20cf..c568a1e6 100644
--- a/Runtime/Serie/Pie/PieHandler.cs
+++ b/Runtime/Serie/Pie/PieHandler.cs
@@ -233,10 +233,12 @@ namespace XCharts.Runtime
                     serieData.context.currentAngle = serieData.context.toAngle;
                 }
                 var halfDegree = (serieData.context.toAngle - startDegree) / 2;
+                var halfRadius = serie.context.insideRadius + (serieData.context.outsideRadius - serie.context.insideRadius) / 2;
                 serieData.context.halfAngle = startDegree + halfDegree;
                 serieData.context.angle = startDegree + halfDegree;
                 serieData.context.offsetCenter = serie.context.center;
                 serieData.context.insideRadius = serie.context.insideRadius;
+                serieData.context.position = ChartHelper.GetPosition(serie.context.center, serieData.context.halfAngle, halfRadius);
                 if (offset > 0)
                 {
                     var currRad = serieData.context.halfAngle * Mathf.Deg2Rad;