diff --git a/Assets/XCharts/CHANGELOG.md b/Assets/XCharts/CHANGELOG.md
index d4addd2b..e8a2e3ef 100644
--- a/Assets/XCharts/CHANGELOG.md
+++ b/Assets/XCharts/CHANGELOG.md
@@ -1,6 +1,7 @@
 
 # 更新日志
 
+* (2020.06.04) 增加`Tooltip`的`alwayShow`参数设置触发后一直显示
 * (2020.06.04) 优化`Tooltip`的`formatter`支持`{.1}`通配符
 * (2020.06.04) 优化`Legend`数量过多时自动换行显示
 * (2020.06.03) 发布`v1.5.1`版本
diff --git a/Assets/XCharts/Documentation/XCharts配置项手册.md b/Assets/XCharts/Documentation/XCharts配置项手册.md
index 744959a1..681e5168 100644
--- a/Assets/XCharts/Documentation/XCharts配置项手册.md
+++ b/Assets/XCharts/Documentation/XCharts配置项手册.md
@@ -217,6 +217,7 @@
 * `paddingTopBottom`：文字和边框的上下边距。
 * `backgroundImage`：提示框的背景图。
 * `ignoreDataDefaultContent`：被忽略数据的默认显示字符信息。
+* `alwayShow`：是否触发后一直显示。
 * `lineStyle`：指示器线条样式 [LineStyle](#LineStyle)。
 * `textStyle`：显示内容文本样式 [TextStyle](#TextStyle)。
 
diff --git a/Assets/XCharts/Runtime/Component/Main/Tooltip.cs b/Assets/XCharts/Runtime/Component/Main/Tooltip.cs
index a1ff257b..2f01f68f 100644
--- a/Assets/XCharts/Runtime/Component/Main/Tooltip.cs
+++ b/Assets/XCharts/Runtime/Component/Main/Tooltip.cs
@@ -63,6 +63,7 @@ namespace XCharts
         [SerializeField] private float m_PaddingLeftRight = 5f;
         [SerializeField] private float m_PaddingTopBottom = 5f;
         [SerializeField] private string m_IgnoreDataDefaultContent = "-";
+        [SerializeField] private bool m_AlwayShow = true;
         [SerializeField] private Sprite m_BackgroundImage;
         [SerializeField] private TextStyle m_TextStyle = new TextStyle(18, FontStyle.Normal);
         [SerializeField] private LineStyle m_LineStyle = new LineStyle(LineStyle.Type.Solid, 0.7f);
@@ -170,6 +171,10 @@ namespace XCharts
         /// </summary>
         public Sprite backgroundImage { get { return m_BackgroundImage; } set { m_BackgroundImage = value; SetBackground(m_BackgroundImage); } }
         /// <summary>
+        /// 是否触发后一直显示。
+        /// </summary>
+        public bool alwayShow { get { return m_AlwayShow; } set { m_AlwayShow = value; } }
+        /// <summary>
         /// 提示框内容文本样式。
         /// </summary>
         public TextStyle textStyle
@@ -383,6 +388,7 @@ namespace XCharts
         /// <param name="flag"></param>
         public void SetActive(bool flag)
         {
+            if(!flag && m_AlwayShow) return;
             lastDataIndex[0] = lastDataIndex[1] = -1;
             if (m_GameObject && m_GameObject.activeInHierarchy != flag)
                 m_GameObject.SetActive(flag);