diff --git a/CHANGELOG.md b/CHANGELOG.md
index f892f80d..a69a4c94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 
 # 更新日志
 
+* (2020.05.29) 修复`PieChart`设置`space`时只有一个数据时绘制异常的问题
 * (2020.05.27) 修复调用`UpdateDataName()`接口时不会自动刷新的问题
 * (2020.05.27) 优化`柱状图`的渐变色效果
 * (2020.05.24) 修复`Axis`同时设置`boundaryGap`和`alignWithLabel`时`Tick`绘制异常的问题
diff --git a/Runtime/Utility/ChartDrawer.cs b/Runtime/Utility/ChartDrawer.cs
index b4ef8036..95cad661 100644
--- a/Runtime/Utility/ChartDrawer.cs
+++ b/Runtime/Utility/ChartDrawer.cs
@@ -811,6 +811,7 @@ namespace XCharts
             float smoothness, int gradientType = 0, bool isYAxis = false)
         {
             if (radius == 0) return;
+            if (space > 0 && Mathf.Abs(toDegree - startDegree) >= 360) space = 0;
             radius -= borderWidth;
             smoothness = (smoothness < 0 ? 2f : smoothness);
             int segments = (int)((2 * Mathf.PI * radius) * (Mathf.Abs(toDegree - startDegree) / 360) / smoothness);
@@ -998,6 +999,7 @@ namespace XCharts
             Color32 borderColor, float space, float smoothness, bool roundCap = false, bool clockwise = true)
         {
             if (toDegree - startDegree == 0) return;
+            if (space > 0 && Mathf.Abs(toDegree - startDegree) >= 360) space = 0;
             if (insideRadius <= 0)
             {
                 DrawSector(vh, p, outsideRadius, color, toColor, startDegree, toDegree, borderWidth, borderColor,