diff --git a/Assets/XCharts/CHANGELOG-EN.md b/Assets/XCharts/CHANGELOG-EN.md
index 480ef25d..edf0f8ad 100644
--- a/Assets/XCharts/CHANGELOG-EN.md
+++ b/Assets/XCharts/CHANGELOG-EN.md
@@ -38,6 +38,7 @@
 
 ## master
 
+* (2021.07.05) Fixed `Piechart` `avoidLabelOverlap` parameter not working
 * (2021.07.04) Fixed incorrect mouse area indication after `PieChart` selected sector
 * (2021.07.04) Optimize when the `Label` of `PieChart` is `Inside`, the offset can be adjusted by the parameter `Margin`
 * (2021.07.01) Added `DataZoom` arguments to `supportInsideScroll` and `supportInsideDrag` to set whether scrolling and dragging are supported in the coordinate system
diff --git a/Assets/XCharts/CHANGELOG.md b/Assets/XCharts/CHANGELOG.md
index c6585b49..7bd78269 100644
--- a/Assets/XCharts/CHANGELOG.md
+++ b/Assets/XCharts/CHANGELOG.md
@@ -38,6 +38,7 @@
 
 ## master
 
+* (2021.07.05) 修复`PieChart`的`avoidLabelOverlap`参数不生效的问题
 * (2021.07.04) 修复`PieChart`选中扇区后鼠标区域指示不准确的问题
 * (2021.07.04) 优化`PieChart`的`Label`为`Inside`时可通过参数`Margin`调节偏移
 * (2021.07.01) 增加`DataZoom`的`supportInsideScroll`和`supportInsideDrag`参数设置坐标系内是否支持滚动和拖拽
diff --git a/Assets/XCharts/Runtime/Helper/SerieLabelHelper.cs b/Assets/XCharts/Runtime/Helper/SerieLabelHelper.cs
index 13ddd448..7fc9be4d 100644
--- a/Assets/XCharts/Runtime/Helper/SerieLabelHelper.cs
+++ b/Assets/XCharts/Runtime/Helper/SerieLabelHelper.cs
@@ -236,7 +236,7 @@ namespace XCharts
             }
         }
 
-        public static void AvoidLabelOverlap(Serie serie)
+        public static void AvoidLabelOverlap(Serie serie, ComponentTheme theme)
         {
             if (!serie.avoidLabelOverlap) return;
             var lastCheckPos = Vector3.zero;
@@ -253,18 +253,17 @@ namespace XCharts
             }
             for (int n = 0; n < splitCount; n++)
             {
-                var serieData = data[n];
-                CheckSerieDataLabel(serie, serieData, false, ref lastCheckPos);
+                CheckSerieDataLabel(serie, data[n], false, theme, ref lastCheckPos);
             }
             lastCheckPos = Vector3.zero;
             for (int n = data.Count - 1; n >= splitCount; n--)
             {
-                var serieData = data[n];
-                CheckSerieDataLabel(serie, serieData, true, ref lastCheckPos);
+                CheckSerieDataLabel(serie, data[n], true, theme, ref lastCheckPos);
             }
         }
 
-        private static void CheckSerieDataLabel(Serie serie, SerieData serieData, bool isLeft, ref Vector3 lastCheckPos)
+        private static void CheckSerieDataLabel(Serie serie, SerieData serieData, bool isLeft, ComponentTheme theme,
+            ref Vector3 lastCheckPos)
         {
             if (!serieData.canShowLabel)
             {
@@ -273,6 +272,7 @@ namespace XCharts
             }
             if (!serieData.show) return;
             var serieLabel = SerieHelper.GetSerieLabel(serie, serieData);
+            var fontSize = serieLabel.textStyle.GetFontSize(theme);
             if (!serieLabel.show) return;
             if (serieLabel.position != SerieLabel.Position.Outside) return;
             if (lastCheckPos == Vector3.zero)
@@ -281,11 +281,10 @@ namespace XCharts
             }
             else if (serieData.labelPosition.x != 0)
             {
-                float hig = serieLabel.textStyle.fontSize;
-                if (lastCheckPos.y - serieData.labelPosition.y < hig)
+                if (lastCheckPos.y - serieData.labelPosition.y < fontSize)
                 {
                     var labelRadius = serie.runtimeOutsideRadius + serieLabel.lineLength1;
-                    var y1 = lastCheckPos.y - hig;
+                    var y1 = lastCheckPos.y - fontSize;
                     var cy = serie.runtimeCenterPos.y;
                     var diff = Mathf.Abs(y1 - cy);
                     var diffX = labelRadius * labelRadius - diff * diff;
diff --git a/Assets/XCharts/Runtime/Internal/DrawSeriePie.cs b/Assets/XCharts/Runtime/Internal/DrawSeriePie.cs
index d62a07f7..6d0787f3 100644
--- a/Assets/XCharts/Runtime/Internal/DrawSeriePie.cs
+++ b/Assets/XCharts/Runtime/Internal/DrawSeriePie.cs
@@ -263,7 +263,7 @@ namespace XCharts
                 startDegree = serieData.runtimePieToAngle;
                 SerieLabelHelper.UpdatePieLabelPosition(serie, serieData);
             }
-            SerieLabelHelper.AvoidLabelOverlap(serie);
+            SerieLabelHelper.AvoidLabelOverlap(serie, chart.theme.common);
         }
 
         private float GetTotalAngle(Serie serie, float dataTotal, ref float totalAngle)
@@ -566,6 +566,8 @@ namespace XCharts
         {
             if (serie.type != SerieType.Pie) return -1;
             var dist = Vector2.Distance(local, serie.runtimeCenterPos);
+            var maxRadius = serie.runtimeOutsideRadius + 3 * chart.theme.serie.pieSelectedOffset;
+            if (dist < serie.runtimeInsideRadius || dist > maxRadius) return -1;
             Vector2 dir = local - new Vector2(serie.runtimeCenterPos.x, serie.runtimeCenterPos.y);
             float angle = ChartHelper.GetAngle360(Vector2.up, dir);
             for (int i = 0; i < serie.data.Count; i++)
diff --git a/Assets/XCharts/Runtime/Internal/Utility/ChartHelper.cs b/Assets/XCharts/Runtime/Internal/Utility/ChartHelper.cs
index 52012228..7ebdd84f 100644
--- a/Assets/XCharts/Runtime/Internal/Utility/ChartHelper.cs
+++ b/Assets/XCharts/Runtime/Internal/Utility/ChartHelper.cs
@@ -259,7 +259,7 @@ namespace XCharts
             chartText.text.raycastTarget = false;
 #endif
             chartText.SetColor(textStyle.GetColor(theme.textColor));
-            chartText.SetFontSize(textStyle.fontSize > 0 ? textStyle.fontSize : theme.fontSize);
+            chartText.SetFontSize(textStyle.GetFontSize(theme));
             chartText.SetText("Text");
             chartText.SetLineSpacing(textStyle.lineSpacing);