diff --git a/Assets/XCharts/Examples/Runtime/Example_LargeData.cs b/Assets/XCharts/Examples/Runtime/Example_LargeData.cs
index d75af752..eae5c44e 100644
--- a/Assets/XCharts/Examples/Runtime/Example_LargeData.cs
+++ b/Assets/XCharts/Examples/Runtime/Example_LargeData.cs
@@ -4,7 +4,7 @@ using UnityEngine;
 namespace XCharts.Example
 {
     [DisallowMultipleComponent]
-    [ExecuteInEditMode]
+    //[ExecuteInEditMode]
     [RequireComponent(typeof(BaseChart))]
     public class Example_LargeData : MonoBehaviour
     {
@@ -25,21 +25,25 @@ namespace XCharts.Example
             chart.GetChartComponent<Title>().text = maxCacheDataNumber + "数据";
         }
 
+        private double lastValue = 0d;
+
         private void Update()
         {
             if (initCount < maxCacheDataNumber)
             {
-                for (int i = 0; i < 10; i++)
+                for (int i = 0; i < 20; i++)
                 {
                     initCount++;
                     if (initCount > maxCacheDataNumber) break;
                     chart.GetChartComponent<Title>().text = initCount + "数据";
-                    
-                    timeNow = timeNow.AddSeconds(1);
-                    float xvalue = Mathf.PI / 180 * initCount;
-                    float yvalue = Mathf.Sin(xvalue);
 
-                    chart.AddData(0, 15 + yvalue * 2);
+                    timeNow = timeNow.AddSeconds(1);
+                    if (lastValue < 20)
+                        lastValue += UnityEngine.Random.Range(0, 5);
+                    else
+                        lastValue += UnityEngine.Random.Range(-5f, 5f);
+                    chart.AddData(0, lastValue);
+
                     chart.AddXAxisData(timeNow.ToString("hh:mm:ss"));
                 }
             }
diff --git a/Assets/XCharts/Runtime/Serie/Line/LineHelper.cs b/Assets/XCharts/Runtime/Serie/Line/LineHelper.cs
index 31df6a6c..9b291f16 100644
--- a/Assets/XCharts/Runtime/Serie/Line/LineHelper.cs
+++ b/Assets/XCharts/Runtime/Serie/Line/LineHelper.cs
@@ -273,7 +273,7 @@ namespace XCharts
                     ref ntp, ref nbp,
                     ref itp, ref ibp,
                     ref clp, ref crp,
-                    ref bitp, ref bibp);
+                    ref bitp, ref bibp, i);
 
                 if (i == 1)
                 {
@@ -283,8 +283,16 @@ namespace XCharts
 
                 if (bitp == bibp)
                 {
-                    AddLineVertToVertexHelper(vh, itp, ibp, lineColor, isVisualMapGradient, isLineStyleGradient,
+                    if (bitp)
+                        AddLineVertToVertexHelper(vh, itp, ibp, lineColor, isVisualMapGradient, isLineStyleGradient,
+                                visualMap, serie.lineStyle, grid, axis, relativedAxis, true, lastDataIsIgnore, isIgnore);
+                    else
+                    {
+                        AddLineVertToVertexHelper(vh, ltp, clp, lineColor, isVisualMapGradient, isLineStyleGradient,
                             visualMap, serie.lineStyle, grid, axis, relativedAxis, true, lastDataIsIgnore, isIgnore);
+                        AddLineVertToVertexHelper(vh, ltp, crp, lineColor, isVisualMapGradient, isLineStyleGradient,
+                            visualMap, serie.lineStyle, grid, axis, relativedAxis, true, lastDataIsIgnore, isIgnore);
+                    }
                 }
                 else
                 {
diff --git a/Assets/XCharts/Runtime/Serie/Line/SimplifiedLineHandler.cs b/Assets/XCharts/Runtime/Serie/Line/SimplifiedLineHandler.cs
index b8c38293..f391e7eb 100644
--- a/Assets/XCharts/Runtime/Serie/Line/SimplifiedLineHandler.cs
+++ b/Assets/XCharts/Runtime/Serie/Line/SimplifiedLineHandler.cs
@@ -1,9 +1,7 @@
 
 using System.Collections.Generic;
-using System.Text;
 using UnityEngine;
 using UnityEngine.UI;
-using XUGL;
 
 namespace XCharts
 {
diff --git a/Assets/XCharts/Runtime/XUGL/UGL.cs b/Assets/XCharts/Runtime/XUGL/UGL.cs
index fd64e70d..1cba640e 100644
--- a/Assets/XCharts/Runtime/XUGL/UGL.cs
+++ b/Assets/XCharts/Runtime/XUGL/UGL.cs
@@ -1360,7 +1360,7 @@ namespace XUGL
                 }
                 else
                 {
-                    DrawTriangle(vh, realCenter, p2, p3, toColor, color, color);
+                    AddVertToVertexHelper(vh, p3, realCenter, color, toColor, i > 0);
                 }
                 p2 = p3;
 
@@ -1628,19 +1628,28 @@ namespace XUGL
                     center.y + outsideRadius * Mathf.Cos(currAngle));
                 p4 = new Vector3(center.x + insideRadius * Mathf.Sin(currAngle),
                     center.y + insideRadius * Mathf.Cos(currAngle));
-                if (!UGLHelper.IsClearColor(emptyColor)) DrawTriangle(vh, center, p1, p4, emptyColor);
                 if (isGradient)
                 {
                     var tcolor = Color32.Lerp(color, toColor, i * 1.0f / segments);
-                    DrawQuadrilateral(vh, p2, p3, p4, p1, tcolor, tcolor);
+                    AddVertToVertexHelper(vh, p3, p4, tcolor, tcolor, i > 0);
                 }
                 else
                 {
-                    DrawQuadrilateral(vh, p2, p3, p4, p1, color, color);
+                    AddVertToVertexHelper(vh, p3, p4, color, color, i > 0);
                 }
                 p1 = p4;
                 p2 = p3;
             }
+            if (!UGLHelper.IsClearColor(emptyColor))
+            {
+                for (int i = 0; i <= segments; i++)
+                {
+                    float currAngle = realStartInAngle + i * segmentAngle;
+                    p4 = new Vector3(center.x + insideRadius * Mathf.Sin(currAngle),
+                        center.y + insideRadius * Mathf.Cos(currAngle));
+                    AddVertToVertexHelper(vh, center, p4, emptyColor, emptyColor, i > 0);
+                }
+            }
             if (needBorder || needSpace || roundCap)
             {
                 if (clockwise)
diff --git a/Assets/XCharts/Runtime/XUGL/UGLHelper.cs b/Assets/XCharts/Runtime/XUGL/UGLHelper.cs
index 856d2649..64c9efbc 100644
--- a/Assets/XCharts/Runtime/XUGL/UGLHelper.cs
+++ b/Assets/XCharts/Runtime/XUGL/UGLHelper.cs
@@ -283,7 +283,7 @@ namespace XUGL
             ref Vector3 ntp, ref Vector3 nbp,
             ref Vector3 itp, ref Vector3 ibp,
             ref Vector3 clp, ref Vector3 crp,
-            ref bool bitp, ref bool bibp
+            ref bool bitp, ref bool bibp, int debugIndex = 0
             )
         {
             var dir1 = (cp - lp).normalized;
@@ -319,6 +319,12 @@ namespace XUGL
                 crp = cp + dir2v * width;
                 bibp = false;
             }
+            if (bitp == false && bibp == false && cp == np)
+            {
+                ltp = cp - dir1v * width;
+                clp = cp + dir1v * width;
+                crp = cp + dir1v * width;
+            }
         }
     }
 }
\ No newline at end of file