diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index 3e3ad024..2b4119c1 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -79,6 +79,7 @@ slug: /changelog
 
 ## master
 
+* (2025.02.05) 重构`SerieSymbol`的`sizeFunction`参数
 * (2025.01.23) 修复`Treemap`的`Label`不显示的问题
 * (2025.01.15) 修复`Chart`在运行时动态添加`Component`异常的问题 (#339)
 * (2025.01.08) 修复`TextMeshPro`关闭时残留组件影响`Text`初始化的问题
diff --git a/Runtime/Component/Child/SerieSymbl.cs b/Runtime/Component/Child/SerieSymbl.cs
index 20e76d20..f4fdb332 100644
--- a/Runtime/Component/Child/SerieSymbl.cs
+++ b/Runtime/Component/Child/SerieSymbl.cs
@@ -152,18 +152,16 @@ namespace XCharts.Runtime
         /// <summary>
         /// 根据指定的sizeType获得标记的大小
         /// </summary>
-        /// <param name="data"></param>
-        /// <returns></returns>
-        public float GetSize(List<double> data, float themeSize)
+        public float GetSize(SerieData serieData, float themeSize)
         {
             switch (m_SizeType)
             {
                 case SymbolSizeType.Custom:
                     return size == 0 ? themeSize : size;
                 case SymbolSizeType.FromData:
-                    if (data != null && dataIndex >= 0 && dataIndex < data.Count)
+                    if (serieData != null && dataIndex >= 0 && dataIndex < serieData.data.Count)
                     {
-                        var value = (float) data[dataIndex] * m_DataScale;
+                        var value = (float) serieData.data[dataIndex] * m_DataScale;
                         if (m_MinSize != 0 && value < m_MinSize) value = m_MinSize;
                         if (m_MaxSize != 0 && value > m_MaxSize) value = m_MaxSize;
                         return value;
@@ -173,7 +171,7 @@ namespace XCharts.Runtime
                         return size == 0 ? themeSize : size;
                     }
                 case SymbolSizeType.Function:
-                    if (data != null && sizeFunction != null) return sizeFunction(data);
+                    if (sizeFunction != null) return sizeFunction(themeSize, serieData);
                     else return size == 0 ? themeSize : size;
                 default:
                     return size == 0 ? themeSize : size;
diff --git a/Runtime/Internal/Misc/DelegateFunction.cs b/Runtime/Internal/Misc/DelegateFunction.cs
index e60bc2da..0ec6fd59 100644
--- a/Runtime/Internal/Misc/DelegateFunction.cs
+++ b/Runtime/Internal/Misc/DelegateFunction.cs
@@ -18,9 +18,7 @@ namespace XCharts.Runtime
     /// <summary>
     /// 获取标记大小的回调。
     /// </summary>
-    /// <param name="data"></param>
-    /// <returns></returns>
-    public delegate float SymbolSizeFunction(List<double> data);
+    public delegate float SymbolSizeFunction(float defaultSize, SerieData serieData);
     public delegate void CustomDrawGaugePointerFunction(VertexHelper vh, int serieIndex, int dataIndex, float currentAngle);
     /// <summary>
     /// DataZoom的start和end变更时的委托方法。
diff --git a/Runtime/Serie/Bar/BarHandler.PolarCoord.cs b/Runtime/Serie/Bar/BarHandler.PolarCoord.cs
index 5cb75bc1..8a2ecfdb 100644
--- a/Runtime/Serie/Bar/BarHandler.PolarCoord.cs
+++ b/Runtime/Serie/Bar/BarHandler.PolarCoord.cs
@@ -31,7 +31,7 @@ namespace XCharts.Runtime
                     foreach (var serieData in serie.data)
                     {
                         var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
-                        var symbolSize = symbol.GetSize(serieData.data, chart.theme.serie.lineSymbolSize);
+                        var symbolSize = symbol.GetSize(serieData, chart.theme.serie.lineSymbolSize);
                         serieData.context.highlight = false;
                         serieData.interact.SetValue(ref needAnimation1, symbolSize);
                     }
diff --git a/Runtime/Serie/Heatmap/HeatmapHandler.PolarCoord.cs b/Runtime/Serie/Heatmap/HeatmapHandler.PolarCoord.cs
index 649267ea..bb2b608d 100644
--- a/Runtime/Serie/Heatmap/HeatmapHandler.PolarCoord.cs
+++ b/Runtime/Serie/Heatmap/HeatmapHandler.PolarCoord.cs
@@ -31,7 +31,7 @@ namespace XCharts.Runtime
                     foreach (var serieData in serie.data)
                     {
                         var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
-                        var symbolSize = symbol.GetSize(serieData.data, chart.theme.serie.lineSymbolSize);
+                        var symbolSize = symbol.GetSize(serieData, chart.theme.serie.lineSymbolSize);
                         serieData.context.highlight = false;
                         serieData.interact.SetValue(ref needAnimation1, symbolSize);
                     }
diff --git a/Runtime/Serie/Line/LineHandler.PolarCoord.cs b/Runtime/Serie/Line/LineHandler.PolarCoord.cs
index 5a014c06..74689e7c 100644
--- a/Runtime/Serie/Line/LineHandler.PolarCoord.cs
+++ b/Runtime/Serie/Line/LineHandler.PolarCoord.cs
@@ -31,7 +31,7 @@ namespace XCharts.Runtime
                     foreach (var serieData in serie.data)
                     {
                         var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
-                        var symbolSize = symbol.GetSize(serieData.data, chart.theme.serie.lineSymbolSize);
+                        var symbolSize = symbol.GetSize(serieData, chart.theme.serie.lineSymbolSize);
                         serieData.context.highlight = false;
                         serieData.interact.SetValue(ref needAnimation1, symbolSize);
                     }
diff --git a/Runtime/Serie/Line/SimplifiedLineHandler.cs b/Runtime/Serie/Line/SimplifiedLineHandler.cs
index aedd02a6..42f522b8 100644
--- a/Runtime/Serie/Line/SimplifiedLineHandler.cs
+++ b/Runtime/Serie/Line/SimplifiedLineHandler.cs
@@ -50,7 +50,7 @@ namespace XCharts.Runtime
                     foreach (var serieData in serie.data)
                     {
                         var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
-                        var symbolSize = symbol.GetSize(serieData.data, chart.theme.serie.lineSymbolSize);
+                        var symbolSize = symbol.GetSize(serieData, chart.theme.serie.lineSymbolSize);
                         serieData.context.highlight = false;
                         serieData.interact.SetValue(ref needAnimation1, symbolSize);
                     }
diff --git a/Runtime/Serie/Radar/RadarHandler.cs b/Runtime/Serie/Radar/RadarHandler.cs
index 9d97512b..034ada5f 100644
--- a/Runtime/Serie/Radar/RadarHandler.cs
+++ b/Runtime/Serie/Radar/RadarHandler.cs
@@ -123,7 +123,7 @@ namespace XCharts.Runtime
                     {
                         var serieData = serie.data[i];
                         var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
-                        var symbolSize = symbol.GetSize(serieData.data, chart.theme.serie.lineSymbolSize);
+                        var symbolSize = symbol.GetSize(serieData, chart.theme.serie.lineSymbolSize);
                         if (m_LegendEnter)
                         {
                             serieData.context.highlight = true;
diff --git a/Runtime/Serie/SerieHelper.cs b/Runtime/Serie/SerieHelper.cs
index e64438a2..2ceb1137 100644
--- a/Runtime/Serie/SerieHelper.cs
+++ b/Runtime/Serie/SerieHelper.cs
@@ -705,7 +705,7 @@ namespace XCharts.Runtime
             if (stateStyle == null)
             {
                 var symbol = GetSerieSymbol(serie, serieData, SerieState.Normal);
-                size = symbol.GetSize(serieData == null ? null : serieData.data, defaultSize);
+                size = symbol.GetSize(serieData, defaultSize);
                 switch (state)
                 {
                     case SerieState.Emphasis:
@@ -719,7 +719,7 @@ namespace XCharts.Runtime
             else
             {
                 var symbol = stateStyle.symbol;
-                size = symbol.GetSize(serieData == null ? null : serieData.data, defaultSize);
+                size = symbol.GetSize(serieData, defaultSize);
             }
             if (serieData != null && checkAnimation)
             {