diff --git a/Scripts/Editor/PropertyDrawers/SerieLabelDrawer.cs b/Scripts/Editor/PropertyDrawers/SerieLabelDrawer.cs
index 7a199954..879c532a 100644
--- a/Scripts/Editor/PropertyDrawers/SerieLabelDrawer.cs
+++ b/Scripts/Editor/PropertyDrawers/SerieLabelDrawer.cs
@@ -59,7 +59,9 @@ namespace XCharts
             if (m_SerieLabelToggle)
             {
                 height += 11 * EditorGUIUtility.singleLineHeight + 10 * EditorGUIUtility.standardVerticalSpacing;
-            }else{
+            }
+            else
+            {
                 height = EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
             }
             return height;
diff --git a/Scripts/UI/Internal/Serie.cs b/Scripts/UI/Internal/Serie.cs
index 04a6d639..3390968d 100644
--- a/Scripts/UI/Internal/Serie.cs
+++ b/Scripts/UI/Internal/Serie.cs
@@ -16,10 +16,25 @@ namespace XCharts
         EffectScatter
     }
 
+/// <summary>
+/// Whether to show as Nightingale chart, which distinguishs data through radius. 
+/// 是否展示成南丁格尔图，通过半径区分数据大小。
+/// </summary>
     public enum RoseType
     {
+        /// <summary>
+        /// Don't show as Nightingale chart.不展示成南丁格尔玫瑰图
+        /// </summary>
         None,
+        /// <summary>
+        /// Use central angle to show the percentage of data, radius to show data size.
+        /// 扇区圆心角展现数据的百分比，半径展现数据的大小。
+        /// </summary>
         Radius,
+        /// <summary>
+        /// All the sectors will share the same central angle, the data size is shown only through radiuses.
+        /// 所有扇区圆心角相同，仅通过半径展现数据大小。
+        /// </summary>
         Area
     }
 
@@ -55,6 +70,10 @@ namespace XCharts
         public int axisIndex { get { return m_AxisIndex; } set { m_AxisIndex = value; } }
         public SerieSymbol symbol { get { return m_Symbol; } set { m_Symbol = value; } }
         public bool clickOffset { get { return m_ClickOffset; } set { m_ClickOffset = value; } }
+        /// <summary>
+        /// Whether to show as Nightingale chart.
+        /// 是否展示成南丁格尔图，通过半径区分数据大小。
+        /// </summary>
         public RoseType roseType { get { return m_RoseType; } set { m_RoseType = value; } }
         public float space { get { return m_Space; } set { m_Space = value; } }
         public float[] center { get { return m_Center; } set { m_Center = value; } }
diff --git a/Scripts/UI/PieChart.cs b/Scripts/UI/PieChart.cs
index 3c945cc7..d821352e 100644
--- a/Scripts/UI/PieChart.cs
+++ b/Scripts/UI/PieChart.cs
@@ -118,6 +118,14 @@ namespace XCharts
 
                 float totalDegree = 360;
                 float startDegree = 0;
+                int showdataCount = 0;
+                if (serie.roseType == RoseType.Area)
+                {
+                    foreach (var sd in serie.data)
+                    {
+                        if (sd.show) showdataCount++;
+                    }
+                }
                 for (int n = 0; n < data.Count; n++)
                 {
                     var serieData = data[n];
@@ -144,7 +152,7 @@ namespace XCharts
                         tempData.angleList.Add(0);
                         continue;
                     }
-                    float degree = totalDegree * value / tempData.dataTotal;
+                     float degree = serie.roseType == RoseType.Area ? (totalDegree / showdataCount) : (totalDegree * value / tempData.dataTotal);
                     float toDegree = startDegree + degree;
 
                     float outSideRadius = serie.roseType > 0 ?
@@ -190,7 +198,7 @@ namespace XCharts
                         ChartHelper.DrawDoughnut(vh, center, tempData.insideRadius, outSideRadius,
                             startDegree, toDegree, color);
                     }
-                    DrawLabelLine(vh, serie,tempData, outSideRadius, center, currAngle, color);
+                    DrawLabelLine(vh, serie, tempData, outSideRadius, center, currAngle, color);
                     isDrawPie = true;
                     tempData.angleList.Add(toDegree);
                     startDegree = toDegree;
@@ -199,7 +207,7 @@ namespace XCharts
             raycastTarget = isClickOffset && isDataHighlight;
         }
 
-        private void DrawLabelLine(VertexHelper vh, Serie serie,PieTempData tempData, float outSideRadius, Vector2 center, float currAngle, Color color)
+        private void DrawLabelLine(VertexHelper vh, Serie serie, PieTempData tempData, float outSideRadius, Vector2 center, float currAngle, Color color)
         {
             if (serie.label.show
                 && serie.label.position == SerieLabel.Position.Outside
@@ -276,6 +284,14 @@ namespace XCharts
 
                 float totalDegree = 360;
                 float startDegree = 0;
+                int showdataCount = 0;
+                if (serie.roseType == RoseType.Area)
+                {
+                    foreach (var sd in serie.data)
+                    {
+                        if (sd.show) showdataCount++;
+                    }
+                }
                 for (int n = 0; n < data.Count; n++)
                 {
                     var serieData = data[n];
@@ -302,7 +318,7 @@ namespace XCharts
                         tempData.angleList.Add(0);
                         continue;
                     }
-                    float degree = totalDegree * value / tempData.dataTotal;
+                    float degree = serie.roseType == RoseType.Area ? (totalDegree / showdataCount) : (totalDegree * value / tempData.dataTotal);
                     float toDegree = startDegree + degree;
 
                     float outSideRadius = serie.roseType > 0 ?
@@ -310,7 +326,6 @@ namespace XCharts
                         tempData.outsideRadius;
                     if (serieData.highlighted)
                     {
-                        //color *= 1.2f;
                         outSideRadius += m_Pie.tooltipExtraRadius;
                     }
                     var offset = serie.space;