diff --git a/Documentation~/en/api.md b/Documentation~/en/api.md
index 7c5245db..991d42fa 100644
--- a/Documentation~/en/api.md
+++ b/Documentation~/en/api.md
@@ -668,6 +668,7 @@ slug: /api
 |SetColor()||public void SetColor(ref bool needInteract, Color32 color)|
 |SetColor()||public void SetColor(ref bool needInteract, Color32 color, Color32 toColor)|
 |SetPosition()||public void SetPosition(ref bool needInteract, Vector3 pos)|
+|SetValue()||public void SetValue(float value)|
 |SetValue()||public void SetValue(ref bool needInteract, float value)|
 |SetValue()||public void SetValue(ref bool needInteract, float value, bool highlight, float rate = 1.3f)|
 |SetValueAndColor()||public void SetValueAndColor(ref bool needInteract, float value, Color32 color)|
@@ -1051,6 +1052,7 @@ the data of serie event.
 |DrawSerie()||public virtual void DrawSerie(VertexHelper vh) { }|
 |DrawTop()||public virtual void DrawTop(VertexHelper vh) { }|
 |DrawUpper()||public virtual void DrawUpper(VertexHelper vh) { }|
+|ForceUpdateSerieContext()||public virtual void ForceUpdateSerieContext() { }|
 |InitComponent()||public virtual void InitComponent() { }|
 |OnBeginDrag()||public virtual void OnBeginDrag(PointerEventData eventData) { }|
 |OnDrag()||public virtual void OnDrag(PointerEventData eventData) { }|
@@ -1081,6 +1083,7 @@ the data of serie event.
 |public method|since|description|
 |--|--|--|
 |DrawLabelLineSymbol()||public void DrawLabelLineSymbol(VertexHelper vh, LabelLine labelLine, Vector3 startPos, Vector3 endPos, Color32 defaultColor)|
+|ForceUpdateSerieContext()||public override void ForceUpdateSerieContext()|
 |GetPointerItemDataDimension()||public override int GetPointerItemDataDimension()|
 |GetPointerItemDataIndex()||public override int GetPointerItemDataIndex()|
 |GetSerieDataAutoColor()||public virtual Color GetSerieDataAutoColor(SerieData serieData)|
@@ -1297,10 +1300,13 @@ UGUI Graphics Library.
 |--|--|--|
 |DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float size, Color32 color)<br/>Draw a diamond. 画菱形（钻石形状） |
 |DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float size, Color32 color, Color32 toColor)<br/>Draw a diamond. 画菱形（钻石形状） |
+|DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float xRadius, float yRadius, Color32 color, Color32 toColor)|
 |DrawEllipse()||public static void DrawEllipse(VertexHelper vh, Vector3 center, float w, float h, Color32 color, float smoothness = 1)|
 |DrawLine()||public static void DrawLine(VertexHelper vh, List&lt;Vector3&gt; points, float width, Color32 color, bool smooth, bool closepath = false)|
 |DrawLine()||public static void DrawLine(VertexHelper vh, Vector3 startPoint, Vector3 endPoint, float width, Color32 color)<br/>Draw a line. 画直线 |
 |DrawLine()||public static void DrawLine(VertexHelper vh, Vector3 startPoint, Vector3 endPoint, float width, Color32 color, Color32 toColor)<br/>Draw a line. 画直线 |
+|DrawMinus()||public static void DrawMinus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)<br/>Draw minus sign. |
+|DrawPlus()||public static void DrawPlus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)<br/>Draw plus sign. |
 |DrawPolygon()||public static void DrawPolygon(VertexHelper vh, List&lt;Vector3&gt; points, Color32 color)<br/>填充任意多边形（目前只支持凸多边形） |
 |DrawRectangle()||public static void DrawRectangle(VertexHelper vh, Rect rect, Color32 color)|
 |DrawRectangle()||public static void DrawRectangle(VertexHelper vh, Rect rect, Color32 color, Color32 toColor)|
diff --git a/Documentation~/en/configuration.md b/Documentation~/en/configuration.md
index eba54676..d1643fca 100644
--- a/Documentation~/en/configuration.md
+++ b/Documentation~/en/configuration.md
@@ -1160,7 +1160,7 @@ The interface for serie data component.
 |show|true||Whether the label line is showed.
 |lineType|||the type of visual guide line.<br/>`LabelLine.LineType`:<br/>- `BrokenLine`: 折线<br/>- `Curves`: 曲线<br/>- `HorizontalLine`: 水平线<br/>|
 |lineColor|Color32(0,0,0,0)||the color of visual guild line.
-|lineAngle|0||the angle of visual guild line.
+|lineAngle|60||the angle of visual guild line.
 |lineWidth|1.0f||the width of visual guild line.
 |lineGap|1.0f||the gap of container and guild line.
 |lineLength1|25f||The length of the first segment of visual guide line.
@@ -1979,7 +1979,7 @@ the state style of serie.
 |field|default|since|comment|
 |--|--|--|--|
 |show|true||Whether the symbol is showed.
-|type|||the type of symbol.<br/>`SymbolType`:<br/>- `None`: 不显示标记。<br/>- `Custom`: 自定义标记。<br/>- `Circle`: 圆形。<br/>- `EmptyCircle`: 空心圆。<br/>- `Rect`: 正方形。可通过设置`itemStyle`的`cornerRadius`变成圆角矩形。<br/>- `EmptyRect`: 空心正方形。<br/>- `Triangle`: 三角形。<br/>- `EmptyTriangle`: 空心三角形。<br/>- `Diamond`: 菱形。<br/>- `EmptyDiamond`: 空心菱形。<br/>- `Arrow`: 箭头。<br/>- `EmptyArrow`: 空心箭头。<br/>|
+|type|||the type of symbol.<br/>`SymbolType`:<br/>- `None`: 不显示标记。<br/>- `Custom`: 自定义标记。<br/>- `Circle`: 圆形。<br/>- `EmptyCircle`: 空心圆。<br/>- `Rect`: 正方形。可通过设置`itemStyle`的`cornerRadius`变成圆角矩形。<br/>- `EmptyRect`: 空心正方形。<br/>- `Triangle`: 三角形。<br/>- `EmptyTriangle`: 空心三角形。<br/>- `Diamond`: 菱形。<br/>- `EmptyDiamond`: 空心菱形。<br/>- `Arrow`: 箭头。<br/>- `EmptyArrow`: 空心箭头。<br/>- `Plus`: 加号。<br/>- `Minus`: 减号。<br/>|
 |size|0f||the size of symbol.
 |gap|0||the gap of symbol and line segment.
 |width|0f||图形的宽。
diff --git a/Documentation~/zh/api.md b/Documentation~/zh/api.md
index 9fdea84d..50379e17 100644
--- a/Documentation~/zh/api.md
+++ b/Documentation~/zh/api.md
@@ -668,6 +668,7 @@ slug: /api
 |SetColor()||public void SetColor(ref bool needInteract, Color32 color)|
 |SetColor()||public void SetColor(ref bool needInteract, Color32 color, Color32 toColor)|
 |SetPosition()||public void SetPosition(ref bool needInteract, Vector3 pos)|
+|SetValue()||public void SetValue(float value)|
 |SetValue()||public void SetValue(ref bool needInteract, float value)|
 |SetValue()||public void SetValue(ref bool needInteract, float value, bool highlight, float rate = 1.3f)|
 |SetValueAndColor()||public void SetValueAndColor(ref bool needInteract, float value, Color32 color)|
@@ -1051,6 +1052,7 @@ serie事件的数据。
 |DrawSerie()||public virtual void DrawSerie(VertexHelper vh) { }|
 |DrawTop()||public virtual void DrawTop(VertexHelper vh) { }|
 |DrawUpper()||public virtual void DrawUpper(VertexHelper vh) { }|
+|ForceUpdateSerieContext()||public virtual void ForceUpdateSerieContext() { }|
 |InitComponent()||public virtual void InitComponent() { }|
 |OnBeginDrag()||public virtual void OnBeginDrag(PointerEventData eventData) { }|
 |OnDrag()||public virtual void OnDrag(PointerEventData eventData) { }|
@@ -1081,6 +1083,7 @@ serie事件的数据。
 |public method|since|description|
 |--|--|--|
 |DrawLabelLineSymbol()||public void DrawLabelLineSymbol(VertexHelper vh, LabelLine labelLine, Vector3 startPos, Vector3 endPos, Color32 defaultColor)|
+|ForceUpdateSerieContext()||public override void ForceUpdateSerieContext()|
 |GetPointerItemDataDimension()||public override int GetPointerItemDataDimension()|
 |GetPointerItemDataIndex()||public override int GetPointerItemDataIndex()|
 |GetSerieDataAutoColor()||public virtual Color GetSerieDataAutoColor(SerieData serieData)|
@@ -1297,10 +1300,13 @@ UGUI 图形库
 |--|--|--|
 |DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float size, Color32 color)<br/>Draw a diamond. 画菱形（钻石形状） |
 |DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float size, Color32 color, Color32 toColor)<br/>Draw a diamond. 画菱形（钻石形状） |
+|DrawDiamond()||public static void DrawDiamond(VertexHelper vh, Vector3 center, float xRadius, float yRadius, Color32 color, Color32 toColor)|
 |DrawEllipse()||public static void DrawEllipse(VertexHelper vh, Vector3 center, float w, float h, Color32 color, float smoothness = 1)|
 |DrawLine()||public static void DrawLine(VertexHelper vh, List&lt;Vector3&gt; points, float width, Color32 color, bool smooth, bool closepath = false)|
 |DrawLine()||public static void DrawLine(VertexHelper vh, Vector3 startPoint, Vector3 endPoint, float width, Color32 color)<br/>Draw a line. 画直线 |
 |DrawLine()||public static void DrawLine(VertexHelper vh, Vector3 startPoint, Vector3 endPoint, float width, Color32 color, Color32 toColor)<br/>Draw a line. 画直线 |
+|DrawMinus()||public static void DrawMinus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)<br/>绘制减号 |
+|DrawPlus()||public static void DrawPlus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)<br/>绘制加号 |
 |DrawPolygon()||public static void DrawPolygon(VertexHelper vh, List&lt;Vector3&gt; points, Color32 color)<br/>填充任意多边形（目前只支持凸多边形） |
 |DrawRectangle()||public static void DrawRectangle(VertexHelper vh, Rect rect, Color32 color)|
 |DrawRectangle()||public static void DrawRectangle(VertexHelper vh, Rect rect, Color32 color, Color32 toColor)|
diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index 6a0ef0e6..e97d6da7 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -74,6 +74,7 @@ slug: /changelog
 
 日志详情：
 
+* (2023.08.02) 增加`Symbol`的`Plus`加号和`Minus`减号的支持
 * (2023.07.31) 增加`Symbol`的`EmptyTriangle`和`EmptyDiamond`的支持，优化`Symbol`表现效果
 * (2023.07.31) 优化`Line`的默认配置效果
 * (2023.07.27) 增加`Serie`的`minRadius`可设置最小半径
diff --git a/Documentation~/zh/configuration.md b/Documentation~/zh/configuration.md
index 9f6ceec9..0c30fea7 100644
--- a/Documentation~/zh/configuration.md
+++ b/Documentation~/zh/configuration.md
@@ -1160,7 +1160,7 @@ Drawing grid in rectangular coordinate. Line chart, bar chart, and scatter chart
 |show|true||是否显示视觉引导线。
 |lineType|||视觉引导线类型。<br/>`LabelLine.LineType`:<br/>- `BrokenLine`: 折线<br/>- `Curves`: 曲线<br/>- `HorizontalLine`: 水平线<br/>|
 |lineColor|Color32(0,0,0,0)||视觉引导线颜色。默认和serie一致取自调色板。
-|lineAngle|0||视觉引导线的固定角度。对折线和曲线有效。
+|lineAngle|60||视觉引导线的固定角度。对折线和曲线有效。
 |lineWidth|1.0f||视觉引导线的宽度。
 |lineGap|1.0f||视觉引导线和容器的间距。
 |lineLength1|25f||视觉引导线第一段的长度。
@@ -1979,7 +1979,7 @@ Serie的状态样式。Serie的状态有正常，高亮，淡出，选中四种
 |field|default|since|comment|
 |--|--|--|--|
 |show|true||是否显示标记。
-|type|||标记类型。<br/>`SymbolType`:<br/>- `None`: 不显示标记。<br/>- `Custom`: 自定义标记。<br/>- `Circle`: 圆形。<br/>- `EmptyCircle`: 空心圆。<br/>- `Rect`: 正方形。可通过设置`itemStyle`的`cornerRadius`变成圆角矩形。<br/>- `EmptyRect`: 空心正方形。<br/>- `Triangle`: 三角形。<br/>- `EmptyTriangle`: 空心三角形。<br/>- `Diamond`: 菱形。<br/>- `EmptyDiamond`: 空心菱形。<br/>- `Arrow`: 箭头。<br/>- `EmptyArrow`: 空心箭头。<br/>|
+|type|||标记类型。<br/>`SymbolType`:<br/>- `None`: 不显示标记。<br/>- `Custom`: 自定义标记。<br/>- `Circle`: 圆形。<br/>- `EmptyCircle`: 空心圆。<br/>- `Rect`: 正方形。可通过设置`itemStyle`的`cornerRadius`变成圆角矩形。<br/>- `EmptyRect`: 空心正方形。<br/>- `Triangle`: 三角形。<br/>- `EmptyTriangle`: 空心三角形。<br/>- `Diamond`: 菱形。<br/>- `EmptyDiamond`: 空心菱形。<br/>- `Arrow`: 箭头。<br/>- `EmptyArrow`: 空心箭头。<br/>- `Plus`: 加号。<br/>- `Minus`: 减号。<br/>|
 |size|0f||标记的大小。
 |gap|0||图形标记和线条的间隙距离。
 |width|0f||图形的宽。
diff --git a/Runtime/Component/Child/SymbolStyle.cs b/Runtime/Component/Child/SymbolStyle.cs
index 3b8677a5..3e394a78 100644
--- a/Runtime/Component/Child/SymbolStyle.cs
+++ b/Runtime/Component/Child/SymbolStyle.cs
@@ -57,7 +57,15 @@ namespace XCharts.Runtime
         /// <summary>
         /// 空心箭头。
         /// </summary>
-        EmptyArrow
+        EmptyArrow,
+        /// <summary>
+        /// 加号。
+        /// </summary>
+        Plus,
+        /// <summary>
+        /// 减号。
+        /// </summary>
+        Minus,
     }
 
     /// <summary>
diff --git a/Runtime/Internal/Utilities/ChartDrawer.cs b/Runtime/Internal/Utilities/ChartDrawer.cs
index c4b6e42b..da6b0871 100644
--- a/Runtime/Internal/Utilities/ChartDrawer.cs
+++ b/Runtime/Internal/Utilities/ChartDrawer.cs
@@ -136,6 +136,20 @@ namespace XCharts.Runtime
                             arrowOffset, arrowDent, backgroundColor);
                     }
                     break;
+                case SymbolType.Plus:
+                    if (gap > 0)
+                    {
+                        UGL.DrawPlus(vh, pos, symbolSize + gap, tickness + gap, backgroundColor);
+                    }
+                    UGL.DrawPlus(vh, pos, symbolSize, tickness, color);
+                    break;
+                case SymbolType.Minus:
+                    if (gap > 0)
+                    {
+                        UGL.DrawMinus(vh, pos, symbolSize + gap, tickness + gap, backgroundColor);
+                    }
+                    UGL.DrawMinus(vh, pos, symbolSize, tickness, color);
+                    break;
             }
         }
 
diff --git a/Runtime/XUGL/UGL.cs b/Runtime/XUGL/UGL.cs
index 8dd86a63..54e74d41 100644
--- a/Runtime/XUGL/UGL.cs
+++ b/Runtime/XUGL/UGL.cs
@@ -1971,5 +1971,40 @@ namespace XUGL
                 vh.AddTriangle(cv, cv + i - 1, cv + i);
             }
         }
+
+        /// <summary>
+        /// Draw plus sign.
+        /// |绘制加号
+        /// </summary>
+        /// <param name="vh"></param>
+        /// <param name="center"></param>
+        /// <param name="radius"></param>
+        /// <param name="tickness"></param>
+        /// <param name="color"></param>
+        public static void DrawPlus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)
+        {
+            var xPos1 = new Vector3(center.x - radius, center.y);
+            var xPos2 = new Vector3(center.x + radius, center.y);
+            var yPos1 = new Vector3(center.x, center.y - radius);
+            var yPos2 = new Vector3(center.x, center.y + radius);
+            UGL.DrawLine(vh, xPos1, xPos2, tickness, color);
+            UGL.DrawLine(vh, yPos1, yPos2, tickness, color);
+        }
+
+        /// <summary>
+        /// Draw minus sign.
+        /// |绘制减号
+        /// </summary>
+        /// <param name="vh"></param>
+        /// <param name="center"></param>
+        /// <param name="radius"></param>
+        /// <param name="tickness"></param>
+        /// <param name="color"></param>
+        public static void DrawMinus(VertexHelper vh, Vector3 center, float radius, float tickness, Color32 color)
+        {
+            var xPos1 = new Vector3(center.x - radius, center.y);
+            var xPos2 = new Vector3(center.x + radius, center.y);
+            UGL.DrawLine(vh, xPos1, xPos2, tickness, color);
+        }
     }
 }
\ No newline at end of file