diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index d3c11f42..8f280127 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -75,6 +75,8 @@ slug: /changelog
 
 ## master
 
+* (2024.07.06) 修复`Chart`在动态创建时背景没有自适应的问题 (#323)
+
 ## v3.11.1
 
 * (2024.07.01) 发布`v3.11.1`版本
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index a347d270..e661013b 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -175,6 +175,7 @@ namespace XCharts.Runtime
                 m_ChartWidth = m_GraphWidth;
                 m_ChartHeight = m_GraphHeight;
                 rectTransform.sizeDelta = new Vector2(m_ChartWidth, m_ChartHeight);
+                UpdateSize();
             }
             ChartHelper.HideAllObject(transform);
             m_ChartInited = true;