diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index 84847cca..f51f8a5b 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -631,15 +631,5 @@ namespace XCharts.Runtime
             SerieHelper.GetItemColor(out color, out toColor, serie, null, m_Theme);
             return color;
         }
-
-        /// <summary>
-        /// 保存图表为图片。
-        /// </summary>
-        /// <param name="imageType">type of image: png, jpg, exr</param>
-        /// <param name="savePath">save path</param>
-        public void SaveAsImage(string imageType = "png", string savePath = "")
-        {
-            StartCoroutine(SaveAsImageSync(imageType, savePath));
-        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index 0815e8dc..10499ebb 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -746,11 +746,5 @@ namespace XCharts.Runtime
             InitComponentHandlers();
             InitSerieHandlers();
         }
-
-        private IEnumerator SaveAsImageSync(string imageType, string path)
-        {
-            yield return new WaitForEndOfFrame();
-            ChartHelper.SaveAsImage(rectTransform, canvas, imageType, path);
-        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Internal/BaseGraph.API.cs b/Runtime/Internal/BaseGraph.API.cs
index dae4f8da..d15276ff 100644
--- a/Runtime/Internal/BaseGraph.API.cs
+++ b/Runtime/Internal/BaseGraph.API.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using UnityEngine;
 using UnityEngine.EventSystems;
 
@@ -170,5 +171,21 @@ namespace XCharts.Runtime
             }
             return true;
         }
+
+        /// <summary>
+        /// 保存图表为图片。
+        /// </summary>
+        /// <param name="imageType">type of image: png, jpg, exr</param>
+        /// <param name="savePath">save path</param>
+        public void SaveAsImage(string imageType = "png", string savePath = "")
+        {
+            StartCoroutine(SaveAsImageSync(imageType, savePath));
+        }
+
+        private IEnumerator SaveAsImageSync(string imageType, string path)
+        {
+            yield return new WaitForEndOfFrame();
+            ChartHelper.SaveAsImage(rectTransform, canvas, imageType, path);
+        }
     }
 }
\ No newline at end of file
diff --git a/Runtime/Internal/Object/ChartLabel.cs b/Runtime/Internal/Object/ChartLabel.cs
index 746e17fb..bf609c64 100644
--- a/Runtime/Internal/Object/ChartLabel.cs
+++ b/Runtime/Internal/Object/ChartLabel.cs
@@ -40,6 +40,7 @@ namespace XCharts.Runtime
         public bool hideIconIfTextEmpty { set { m_HideIconIfTextEmpty = value; } }
         public bool isIconActive { get; private set; }
         public bool isAnimationEnd { get; internal set; }
+        public Rect rect { get; set; }
 
         internal RectTransform objectRect
         {
diff --git a/Runtime/Internal/Painter.cs b/Runtime/Internal/Painter.cs
index c60041a9..b1ac47b4 100644
--- a/Runtime/Internal/Painter.cs
+++ b/Runtime/Internal/Painter.cs
@@ -51,7 +51,7 @@ namespace XCharts.Runtime
             Init();
         }
 
-        internal void CheckRefresh()
+        public void CheckRefresh()
         {
             if (m_Refresh && gameObject.activeSelf)
             {
diff --git a/Runtime/Internal/Utilities/ChartHelper.cs b/Runtime/Internal/Utilities/ChartHelper.cs
index 2b8a88f8..8f3b7d6f 100644
--- a/Runtime/Internal/Utilities/ChartHelper.cs
+++ b/Runtime/Internal/Utilities/ChartHelper.cs
@@ -324,14 +324,20 @@ namespace XCharts.Runtime
             if (background == null) return;
             if (imageStyle.show)
             {
+                background.gameObject.SetActive(true);
                 background.sprite = imageStyle.sprite;
                 background.color = imageStyle.color;
                 background.type = imageStyle.type;
+                if (imageStyle.width > 0 && imageStyle.height > 0)
+                {
+                    background.rectTransform.sizeDelta = new Vector2(imageStyle.width, imageStyle.height);
+                }
             }
             else
             {
                 background.sprite = null;
                 background.color = Color.clear;
+                background.gameObject.SetActive(false);
             }
         }