diff --git a/Assets/XCharts/Examples/Runtime/Example13_LineSimple.cs b/Assets/XCharts/Examples/Runtime/Example13_LineSimple.cs
index 46f209ce..95ceb6b4 100644
--- a/Assets/XCharts/Examples/Runtime/Example13_LineSimple.cs
+++ b/Assets/XCharts/Examples/Runtime/Example13_LineSimple.cs
@@ -19,6 +19,7 @@ namespace XCharts.Examples
             if (chart == null)
             {
                 chart = gameObject.AddComponent<LineChart>();
+                chart.SetSize(580, 300);//代码动态添加图表需要设置尺寸，或直接操作chart.rectTransform
             }
             chart.title.show = true;
             chart.title.text = "Line Simple";
diff --git a/Doc/教程：5分钟上手XCharts.md b/Doc/教程：5分钟上手XCharts.md
index 32530273..d120c07e 100644
--- a/Doc/教程：5分钟上手XCharts.md
+++ b/Doc/教程：5分钟上手XCharts.md
@@ -49,13 +49,14 @@
 
 ## 用代码添加折线图
 
-给`gameObject`挂上`LineChart`脚本：
+给`gameObject`挂上`LineChart`脚本，需要调用`SetSize()`接口设置图表尺寸，或者直接操作`chart.rectTransfrom`：
 
 ```C#
 var chart = gameObject.GetComponent<LineChart>();
 if (chart == null)
 {
     chart = gameObject.AddComponent<LineChart>();
+    chart.SetSize(580, 300);//代码动态添加图表需要设置尺寸，或直接操作chart.rectTransform
 }
 ```