diff --git a/Examples/Runtime/Example31_PieUpdateName.cs b/Examples/Runtime/Example31_PieUpdateName.cs
new file mode 100644
index 00000000..159b40e8
--- /dev/null
+++ b/Examples/Runtime/Example31_PieUpdateName.cs
@@ -0,0 +1,69 @@
+/******************************************/
+/*                                        */
+/*     Copyright (c) 2018 monitor1394     */
+/*     https://github.com/monitor1394     */
+/*                                        */
+/******************************************/
+
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace XCharts.Examples
+{
+    [DisallowMultipleComponent]
+    [ExecuteInEditMode]
+    public class Example31_PieUpdateName : MonoBehaviour
+    {
+        PieChart chart;
+        int count = 0;
+
+        void Awake()
+        {
+            chart = gameObject.GetComponent<PieChart>();
+            if (chart == null)
+            {
+                chart = gameObject.AddComponent<PieChart>();
+            }
+            var serieIndex = 0;
+            var serie = chart.series.GetSerie(serieIndex);
+            if (serie == null) return;
+            serie.label.show = true;
+            serie.label.position = SerieLabel.Position.Outside;
+        }
+
+        void Update()
+        {
+            if (Input.GetKeyDown(KeyCode.Space))
+            {
+                if (count % 2 == 0) ResetSameName();
+                else UpdateDataName();
+                count++;
+            }
+        }
+
+        void UpdateDataName()
+        {
+            var serieIndex = 0;
+            var serie = chart.series.GetSerie(serieIndex);
+            if (serie == null) return;
+            for (int i = 0; i < serie.dataCount; i++)
+            {
+                var value = Random.Range(10, 100);
+                chart.UpdateData(serieIndex, i, value);
+                chart.UpdateDataName(serieIndex, i, "value=" + value);
+            }
+        }
+
+        void ResetSameName()
+        {
+            var serieIndex = 0;
+            var serie = chart.series.GetSerie(serieIndex);
+            if (serie == null) return;
+            for (int i = 0; i < serie.dataCount; i++)
+            {
+                chart.UpdateDataName(serieIndex, i, "piename");
+            }
+            chart.themeInfo.SetAllDirty();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Examples/Runtime/Example31_PieUpdateName.cs.meta b/Examples/Runtime/Example31_PieUpdateName.cs.meta
new file mode 100644
index 00000000..2afd8a2a
--- /dev/null
+++ b/Examples/Runtime/Example31_PieUpdateName.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 41195ee7a652f4ef79c22c365d314621
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Component/Main/Series.cs b/Runtime/Component/Main/Series.cs
index 43ca797e..606d193f 100644
--- a/Runtime/Component/Main/Series.cs
+++ b/Runtime/Component/Main/Series.cs
@@ -99,6 +99,7 @@ namespace XCharts
         {
             base.ClearDirty();
             ClearLabelDirty();
+            SeriesHelper.ClearNameDirty(this);
         }
 
         /// <summary>
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index c1e25412..ed79e2a2 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -131,7 +131,6 @@ namespace XCharts
         protected virtual void Update()
         {
             CheckSize();
-            CheckLegend();
             CheckComponent();
             CheckPointerPos();
             CheckTooltip();
@@ -142,6 +141,24 @@ namespace XCharts
 
         protected virtual void CheckComponent()
         {
+            if (m_Series.anyDirty)
+            {
+                if (m_Series.vertsDirty) RefreshChart();
+                if (SeriesHelper.IsLabelDirty(m_Series)) m_ReinitLabel = true;
+                if (SeriesHelper.IsNeedLabelUpdate(m_Series) && !m_RefreshChart) m_RefreshLabel = true;
+                if (SeriesHelper.IsLabelDirty(m_Series)) m_ReinitLabel = true;
+                foreach (var serie in m_Series.list)
+                {
+                    if (serie.titleStyle.componentDirty) m_ReinitTitle = true;
+                    if (serie.nameDirty)
+                    {
+                        m_Legend.SetAllDirty();
+                        RefreshChart();
+                        serie.ClearNameDirty();
+                    }
+                }
+                m_Series.ClearDirty();
+            }
             if (m_ThemeInfo.anyDirty)
             {
                 if (m_CheckTheme != m_ThemeInfo.theme)
@@ -188,17 +205,6 @@ namespace XCharts
                 RefreshChart();
                 m_Settings.ClearDirty();
             }
-            if (m_Series.anyDirty)
-            {
-                if (m_Series.vertsDirty) RefreshChart();
-                if (SeriesHelper.IsLabelDirty(m_Series)) m_ReinitLabel = true;
-                if (SeriesHelper.IsNeedLabelUpdate(m_Series) && !m_RefreshChart) m_RefreshLabel = true;
-                foreach (var serie in m_Series.list)
-                {
-                    if (serie.titleStyle.componentDirty) m_ReinitTitle = true;
-                }
-                m_Series.ClearDirty();
-            }
         }
 
         protected override void OnEnable()
@@ -581,23 +587,6 @@ namespace XCharts
             OnSizeChanged();
         }
 
-        private void CheckLegend()
-        {
-            if (m_Legend.show)
-            {
-                foreach (var serie in series.list)
-                {
-                    if (serie.nameDirty)
-                    {
-                        m_Legend.SetAllDirty();
-                        serie.ClearNameDirty();
-                        RefreshChart();
-                        break;
-                    }
-                }
-            }
-        }
-
         private void CheckPointerPos()
         {
             if (m_ForceOpenRaycastTarget) raycastTarget = true;
diff --git a/Runtime/Internal/Helper/SeriesHelper.cs b/Runtime/Internal/Helper/SeriesHelper.cs
index cc8e9353..155eeaca 100644
--- a/Runtime/Internal/Helper/SeriesHelper.cs
+++ b/Runtime/Internal/Helper/SeriesHelper.cs
@@ -31,6 +31,23 @@ namespace XCharts
             return false;
         }
 
+        public static bool IsNameDirty(Series series)
+        {
+            foreach (var serie in series.list)
+            {
+                if (serie.nameDirty) return true;
+            }
+            return false;
+        }
+
+        public static void ClearNameDirty(Series series)
+        {
+            foreach (var serie in series.list)
+            {
+                serie.ClearNameDirty();
+            }
+        }
+
         public static bool IsLegalLegendName(string name)
         {
             int numName = -1;