diff --git a/Editor/MainComponents/MarkLineEditor.cs b/Editor/MainComponents/MarkLineEditor.cs
index 34e5bd96..b7e002f9 100644
--- a/Editor/MainComponents/MarkLineEditor.cs
+++ b/Editor/MainComponents/MarkLineEditor.cs
@@ -34,7 +34,7 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_Name");
                 switch (type)
                 {
-                    case MarkLineType.None:
+                    case MarkLineType.Custom:
                         PropertyField(prop, "m_XPosition");
                         PropertyField(prop, "m_YPosition");
                         PropertyField(prop, "m_XValue");
@@ -48,7 +48,7 @@ namespace XCharts.Editor
                         break;
                 }
                 PropertyField(prop, "m_Group");
-                if (group > 0 && type == MarkLineType.None) PropertyField(prop, "m_ZeroPosition");
+                if (group > 0 && type == MarkLineType.Custom) PropertyField(prop, "m_ZeroPosition");
                 PropertyField(prop, "m_LineStyle");
                 PropertyField(prop, "m_StartSymbol");
                 PropertyField(prop, "m_EndSymbol");
diff --git a/Runtime/Component/Mark/MarkLine.cs b/Runtime/Component/Mark/MarkLine.cs
index 47f1e2ba..c917b3e0 100644
--- a/Runtime/Component/Mark/MarkLine.cs
+++ b/Runtime/Component/Mark/MarkLine.cs
@@ -4,25 +4,34 @@ using UnityEngine;
 namespace XCharts.Runtime
 {
     /// <summary>
-    /// 标线类型
+    /// Mark line type.
+    /// ||标线类型
     /// </summary>
     public enum MarkLineType
     {
-        None,
         /// <summary>
-        /// 最小值。
+        /// Custom. You can customize the xy coordinates or values. 
+        /// ||自定义。可自定义xy坐标或数值。
+        /// </summary>
+        Custom,
+        /// <summary>
+        /// Minimum value.
+        /// ||最小值。
         /// </summary>
         Min,
         /// <summary>
-        /// 最大值。
+        /// Maximum value.
+        /// ||最大值。
         /// </summary>
         Max,
         /// <summary>
-        /// 平均值。
+        /// Average value.
+        /// ||平均值。
         /// </summary>
         Average,
         /// <summary>
-        /// 中位数。
+        /// Median.
+        /// ||中位数。
         /// </summary>
         Median
     }
@@ -118,7 +127,7 @@ namespace XCharts.Runtime
     [System.Serializable]
     public class MarkLineData : ChildComponent
     {
-        [SerializeField] private MarkLineType m_Type = MarkLineType.None;
+        [SerializeField] private MarkLineType m_Type = MarkLineType.Custom;
         [SerializeField] private string m_Name;
         [SerializeField] private int m_Dimension = 1;
         [SerializeField] private float m_XPosition;
@@ -170,7 +179,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The x coordinate relative to the origin, in pixels.
-        /// ||相对原点的 x 坐标，单位像素。当type为None时有效。
+        /// ||相对原点的 x 坐标，单位像素。当type为Custom时有效。
         /// </summary>
         public float xPosition
         {
@@ -179,7 +188,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The y coordinate relative to the origin, in pixels.
-        /// ||相对原点的 y 坐标，单位像素。当type为None时有效。
+        /// ||相对原点的 y 坐标，单位像素。当type为Custom时有效。
         /// </summary>
         public float yPosition
         {
@@ -188,7 +197,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The value specified on the X-axis. A value specified when the X-axis is the category axis represents the index of the category axis data, otherwise a specific value.
-        /// ||X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+        /// ||X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
         /// </summary>
         public double xValue
         {
@@ -197,7 +206,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// That's the value on the Y-axis. The value specified when the Y axis is the category axis represents the index of the category axis data, otherwise the specific value.
-        /// ||Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+        /// ||Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
         /// </summary>
         public double yValue
         {
diff --git a/Runtime/Component/Mark/MarkLineHandler.cs b/Runtime/Component/Mark/MarkLineHandler.cs
index ccf6cf1b..754dccfc 100644
--- a/Runtime/Component/Mark/MarkLineHandler.cs
+++ b/Runtime/Component/Mark/MarkLineHandler.cs
@@ -146,7 +146,7 @@ namespace XCharts.Runtime
                         data.runtimeValue = SerieHelper.GetMedianData(serie, data.dimension, dataZoom);
                         GetStartEndPos(yAxis, grid, data.runtimeValue, ref sp, ref ep);
                         break;
-                    case MarkLineType.None:
+                    case MarkLineType.Custom:
                         if (data.xPosition != 0)
                         {
                             data.runtimeValue = data.xPosition;
@@ -303,7 +303,7 @@ namespace XCharts.Runtime
                     pX = GetAxisPosition(grid, xAxis, dataZoom, serieDataCount, serieData.index);
                     pY = GetAxisPosition(grid, yAxis, dataZoom, serieDataCount, data.runtimeValue);
                     return new Vector3(pX, pY);
-                case MarkLineType.None:
+                case MarkLineType.Custom:
                     if (data.zeroPosition)
                     {
                         data.runtimeValue = 0;