diff --git a/Runtime/API/RadarChart_API.cs b/Runtime/API/RadarChart_API.cs
new file mode 100644
index 00000000..df8908fa
--- /dev/null
+++ b/Runtime/API/RadarChart_API.cs
@@ -0,0 +1,131 @@
+/******************************************/
+/*                                        */
+/*     Copyright (c) 2018 monitor1394     */
+/*     https://github.com/monitor1394     */
+/*                                        */
+/******************************************/
+
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace XCharts
+{
+    public partial class RadarChart
+    {
+        /// <summary>
+        /// 雷达坐标系组件列表。
+        /// </summary>
+        public List<Radar> radars { get { return m_Radars; } }
+
+        /// <summary>
+        /// 移除所有数据，包含雷达坐标系指示器数据。
+        /// </summary>
+        public override void RemoveData()
+        {
+            base.RemoveData();
+            foreach (var radar in m_Radars)
+            {
+                radar.indicatorList.Clear();
+            }
+            m_CheckRadars.Clear();
+        }
+
+        /// <summary>
+        /// 移除所有雷达坐标系组件。
+        /// </summary>
+        public void RemoveRadar()
+        {
+            m_Radars.Clear();
+        }
+
+        /// <summary>
+        /// 添加雷达坐标系组件。
+        /// </summary>
+        public void AddRadar(Radar radar)
+        {
+            m_Radars.Add(radar);
+        }
+
+        /// <summary>
+        /// 添加雷达坐标系组件。
+        /// </summary>
+        /// <param name="shape">形状，圆形还是多边形</param>
+        /// <param name="center">中心点，0-1浮点数时表示百分比</param>
+        /// <param name="radius">半径，0-1浮点数时表示百分比</param>
+        /// <param name="splitNumber">指示器轴的分割段数</param>
+        /// <param name="lineWidth">线条宽</param>
+        /// <param name="showIndicator">是否显示指示器名称</param>
+        /// <param name="showSplitArea">是否显示分割区域</param>
+        /// <returns></returns>
+        public Radar AddRadar(Radar.Shape shape, Vector2 center, float radius, int splitNumber = 5,
+            float lineWidth = 0.6f, bool showIndicator = true, bool showSplitArea = true)
+        {
+            var radar = new Radar();
+            radar.shape = shape;
+            radar.splitNumber = splitNumber;
+            radar.radius = radius;
+            radar.indicator = showIndicator;
+            radar.center[0] = center.x;
+            radar.center[1] = center.y;
+            radar.splitArea.show = showSplitArea;
+            radar.lineStyle.width = lineWidth;
+            m_Radars.Add(radar);
+            return radar;
+        }
+
+        /// <summary>
+        /// 添加指示器。
+        /// </summary>
+        /// <param name="radarIndex">雷达坐标系组件索引，从0开始</param>
+        /// <param name="name">指示器名称</param>
+        /// <param name="min">指示器最小值</param>
+        /// <param name="max">指示器最大值</param>
+        /// <returns></returns>
+        public Radar.Indicator AddIndicator(int radarIndex, string name, float min, float max)
+        {
+            var radar = GetRadar(radarIndex);
+            if (radar == null) return null;
+            return radar.AddIndicator(name, min, max);
+        }
+
+        /// <summary>
+        /// 更新指示器。
+        /// </summary>
+        /// <param name="radarIndex">雷达坐标系组件的索引，从0开始</param>
+        /// <param name="indicatorIndex">指示器索引，从0开始</param>
+        /// <param name="name">指示器名称</param>
+        /// <param name="min">指示器最小值</param>
+        /// <param name="max">指示器最大值</param>
+        /// <returns></returns>
+        public bool UpdateIndicator(int radarIndex, int indicatorIndex, string name, float min, float max)
+        {
+            var radar = GetRadar(radarIndex);
+            if (radar == null) return false;
+            return radar.UpdateIndicator(indicatorIndex, name, min, max);
+        }
+
+        /// <summary>
+        /// 获得指定索引的雷达坐标系组件。
+        /// </summary>
+        /// <param name="radarIndex"></param>
+        /// <returns></returns>
+        public Radar GetRadar(int radarIndex)
+        {
+            if (radarIndex < 0 || radarIndex > m_Radars.Count - 1) return null;
+            return m_Radars[radarIndex];
+        }
+
+        /// <summary>
+        /// 获得指定雷达坐标系组件指定索引的指示器。
+        /// </summary>
+        /// <param name="radarIndex"></param>
+        /// <param name="indicatorIndex"></param>
+        /// <returns></returns>
+        public Radar.Indicator GetIndicator(int radarIndex, int indicatorIndex)
+        {
+            var radar = GetRadar(radarIndex);
+            if (radar != null) return radar.GetIndicator(indicatorIndex);
+            else return null;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Runtime/API/RadarChart_API.cs.meta b/Runtime/API/RadarChart_API.cs.meta
new file mode 100644
index 00000000..111916d9
--- /dev/null
+++ b/Runtime/API/RadarChart_API.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f17a7aa35fdd3417dab9414f10fe2886
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Component/Main/Radar.cs b/Runtime/Component/Main/Radar.cs
index 0cef4db5..a2e629c1 100644
--- a/Runtime/Component/Main/Radar.cs
+++ b/Runtime/Component/Main/Radar.cs
@@ -417,5 +417,31 @@ namespace XCharts
             var y = runtimeCenterPos.y + (runtimeRadius + indicatorGap) * Mathf.Cos(angle);
             return new Vector3(x, y);
         }
+
+        public Radar.Indicator AddIndicator(string name, float min, float max)
+        {
+            var indicator = new Radar.Indicator();
+            indicator.name = name;
+            indicator.min = min;
+            indicator.max = max;
+            indicatorList.Add(indicator);
+            return indicator;
+        }
+
+        public bool UpdateIndicator(int indicatorIndex, string name, float min, float max)
+        {
+            var indicator = GetIndicator(indicatorIndex);
+            if (indicator == null) return false;
+            indicator.name = name;
+            indicator.min = min;
+            indicator.max = max;
+            return true;
+        }
+
+        public Radar.Indicator GetIndicator(int indicatorIndex)
+        {
+            if (indicatorIndex < 0 || indicatorIndex > indicatorList.Count - 1) return null;
+            return indicatorList[indicatorIndex];
+        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Component/Main/Serie.cs b/Runtime/Component/Main/Serie.cs
index a83eb37b..bc7bfd50 100644
--- a/Runtime/Component/Main/Serie.cs
+++ b/Runtime/Component/Main/Serie.cs
@@ -731,7 +731,6 @@ namespace XCharts
             var serieData = new SerieData()
             {
                 data = new List<float>() { xValue, value },
-                lastData = new List<float>() { xValue, value },
                 name = dataName
             };
             serieData.index = xValue;
@@ -760,7 +759,6 @@ namespace XCharts
             var serieData = new SerieData()
             {
                 data = new List<float>() { xValue, yValue },
-                lastData = new List<float>() { xValue, yValue },
                 name = dataName
             };
             serieData.index = m_Data.Count;
@@ -804,7 +802,6 @@ namespace XCharts
                 for (int i = 0; i < valueList.Count; i++)
                 {
                     serieData.data.Add(valueList[i]);
-                    serieData.lastData.Add(valueList[i]);
                 }
                 m_Data.Add(serieData);
                 return serieData;
@@ -1041,9 +1038,9 @@ namespace XCharts
         {
             if (index >= 0 && index < m_Data.Count && values != null)
             {
-                var list = m_Data[index].data;
-                list.Clear();
-                foreach (var v in values) list.Add(v);
+                var serieData = m_Data[index];
+                for (int i = 0; i < values.Count; i++)
+                    serieData.UpdateData(i, values[i]);
                 return true;
             }
             return false;
diff --git a/Runtime/Component/Sub/SerieData.cs b/Runtime/Component/Sub/SerieData.cs
index 554a12a5..cbfb711b 100644
--- a/Runtime/Component/Sub/SerieData.cs
+++ b/Runtime/Component/Sub/SerieData.cs
@@ -156,7 +156,6 @@ namespace XCharts
         private List<float> m_LastData = new List<float>();
         private List<float> m_DataUpdateTime = new List<float>();
         private List<bool> m_DataUpdateFlag = new List<bool>();
-        public List<float> lastData { get { return m_LastData; } internal set { m_LastData = value; } }
 
         public float GetData(int index)
         {
@@ -169,7 +168,7 @@ namespace XCharts
 
         public float GetLastData(int index)
         {
-            if (index >= 0 && index < lastData.Count)
+            if (index >= 0 && index < m_LastData.Count)
             {
                 return m_LastData[index];
             }
@@ -219,6 +218,8 @@ namespace XCharts
             if (m_LastData.Count != m_Data.Count)
             {
                 m_LastData.Clear();
+                m_DataUpdateTime.Clear();
+                m_DataUpdateFlag.Clear();
                 for (int i = 0; i < m_Data.Count; i++)
                 {
                     m_LastData.Add(m_Data[i]);
diff --git a/Runtime/RadarChart.cs b/Runtime/RadarChart.cs
index d1295890..6c49234c 100644
--- a/Runtime/RadarChart.cs
+++ b/Runtime/RadarChart.cs
@@ -16,7 +16,7 @@ namespace XCharts
     [ExecuteInEditMode]
     [RequireComponent(typeof(RectTransform))]
     [DisallowMultipleComponent]
-    public class RadarChart : BaseChart
+    public partial class RadarChart : BaseChart
     {
         private const string INDICATOR_TEXT = "indicator";
 
@@ -24,21 +24,6 @@ namespace XCharts
         private List<Radar> m_CheckRadars = new List<Radar>();
         private bool m_IsEnterLegendButtom;
 
-        public List<Radar> radars { get { return m_Radars; } }
-
-        /// <summary>
-        /// 移除所有数据，包含指示器数据。
-        /// </summary>
-        public override void RemoveData()
-        {
-            base.RemoveData();
-            foreach (var radar in m_Radars)
-            {
-                radar.indicatorList.Clear();
-            }
-            m_CheckRadars.Clear();
-        }
-
         protected override void OnLegendButtonClick(int index, string legendName, bool show)
         {
             bool active = CheckDataShow(legendName, show);