diff --git a/Assets/XCharts/CHANGELOG-EN.md b/Assets/XCharts/CHANGELOG-EN.md
index 8dab8a1f..673f0ebc 100644
--- a/Assets/XCharts/CHANGELOG-EN.md
+++ b/Assets/XCharts/CHANGELOG-EN.md
@@ -42,6 +42,7 @@
 
 ## branch-2.0
 
+* (2022.02.17) Fixed bug where axis split line might be displayed outside the coordinate system #181
 * (2022.02.08) Fixed {d} formatter error when value is 0
 * (2022.02.08) Fixed `YAxis` `AxisLabel`'s `onZero` does not work
 * (2022.01.06) Improved `Zebra` bar chart
diff --git a/Assets/XCharts/CHANGELOG.md b/Assets/XCharts/CHANGELOG.md
index 668e1569..bdea7376 100644
--- a/Assets/XCharts/CHANGELOG.md
+++ b/Assets/XCharts/CHANGELOG.md
@@ -42,6 +42,7 @@
 
 ## branch-2.0
 
+* (2022.02.17) 修复`Axis`的`SplitLine`可能会显示在坐标系外的问题 #181
 * (2022.02.08) 修复数据全0时`{d}`显示不正确的问题
 * (2022.02.08) 修复`YAxis`的`AxisLabel`的`onZero`参数不生效的问题
 * (2022.01.06) 优化`Zebra`斑马柱图
diff --git a/Assets/XCharts/Runtime/Internal/CoordinateChart.cs b/Assets/XCharts/Runtime/Internal/CoordinateChart.cs
index 76eb9125..c20e123c 100644
--- a/Assets/XCharts/Runtime/Internal/CoordinateChart.cs
+++ b/Assets/XCharts/Runtime/Internal/CoordinateChart.cs
@@ -1082,7 +1082,7 @@ private void DrawYAxisSplit(VertexHelper vh, int yAxisIndex, YAxis yAxis)
                             new Vector2(grid.runtimeX, pY + scaleWidth),
                             yAxis.splitArea.GetColor(i, m_Theme.axis));
                     }
-                    if (yAxis.splitLine.show)
+                    if (yAxis.splitLine.show && pY >= grid.runtimeY)
                     {
                         if (!xAxis.axisLine.show || !xAxis.axisLine.onZero || zeroPos.y != pY)
                         {
@@ -1200,7 +1200,7 @@ private void DrawXAxisSplit(VertexHelper vh, int xAxisIndex, XAxis xAxis)
                             new Vector2(pX + scaleWidth, grid.runtimeY),
                             xAxis.splitArea.GetColor(i, m_Theme.axis));
                     }
-                    if (xAxis.splitLine.show)
+                    if (xAxis.splitLine.show && pX >= grid.runtimeX)
                     {
                         if (!yAxis.axisLine.show || !yAxis.axisLine.onZero || zeroPos.x != pX)
                         {