diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index 01eb2346..3f4658a4 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -80,6 +80,8 @@ slug: /changelog
 
 ## master
 
+* (2025.03.22) 增加`Comment`的`layer`设置层级
+* (2025.03.21) 优化`Comment`的坐标刷新
 * (2025.03.19) 增加`Serie`的`Label`的`formatter`支持`{index}`通配符
 * (2025.03.18) 增加`Bar`可添加`TitleStyle`组件支持
 * (2025.03.18) 增加`LabelStyle`的`fixedX`和`fixedY`可固定label的坐标
diff --git a/Editor/MainComponents/CommentEditor.cs b/Editor/MainComponents/CommentEditor.cs
index 922e44a4..f84aab98 100644
--- a/Editor/MainComponents/CommentEditor.cs
+++ b/Editor/MainComponents/CommentEditor.cs
@@ -9,6 +9,7 @@ namespace XCharts.Editor
         public override void OnInspectorGUI()
         {
             ++EditorGUI.indentLevel;
+            PropertyField("m_Layer");
             PropertyField("m_LabelStyle");
             //PropertyField("m_MarkStyle");
             PropertyListField("m_Items", true);
diff --git a/Runtime/Component/Comment/Comment.cs b/Runtime/Component/Comment/Comment.cs
index dffabb57..7053353d 100644
--- a/Runtime/Component/Comment/Comment.cs
+++ b/Runtime/Component/Comment/Comment.cs
@@ -5,14 +5,33 @@ using UnityEngine;
 namespace XCharts.Runtime
 {
     /// <summary>
-    /// comment of chart.
-    /// ||图表注解组件。
+    /// The layer of comment.
+    /// ||注解的显示层级。
+    /// </summary>
+    [Since("v3.15.0")]
+    public enum CommentLayer
+    {
+        /// <summary>
+        /// The comment is display under the serie.
+        /// ||注解在系列下方。
+        /// </summary>
+        Lower,
+        /// <summary>
+        /// The comment is display above the serie.
+        /// ||注解在系列上方。
+        /// </summary>
+        Upper
+    }
+    /// <summary>
+    /// comment of chart. Used to annotate special information in the chart.
+    /// ||图表注解组件。用于标注图表中的特殊信息。
     /// </summary>
     [Serializable]
     [ComponentHandler(typeof(CommentHander), true)]
     public class Comment : MainComponent, IPropertyChanged
     {
         [SerializeField] private bool m_Show = true;
+        [SerializeField][Since("v3.15.0")] private CommentLayer m_Layer = CommentLayer.Lower;
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle();
         [SerializeField] private CommentMarkStyle m_MarkStyle;
         [SerializeField] private List<CommentItem> m_Items = new List<CommentItem>() { new CommentItem() };
@@ -23,6 +42,11 @@ namespace XCharts.Runtime
         /// </summary>
         public bool show { get { return m_Show; } set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetComponentDirty(); } }
         /// <summary>
+        /// The layer of comment.
+        /// ||注解的显示层级。
+        /// </summary>
+        public CommentLayer layer { get { return m_Layer; } set { if (PropertyUtil.SetStruct(ref m_Layer, value)) SetComponentDirty(); } }
+        /// <summary>
         /// The items of comment.
         /// ||注解项。每个注解组件可以设置多个注解项。
         /// </summary>
@@ -45,7 +69,12 @@ namespace XCharts.Runtime
             get { return m_MarkStyle; }
             set { if (PropertyUtil.SetClass(ref m_MarkStyle, value)) SetVerticesDirty(); }
         }
-
+        /// <summary>
+        /// Get the label style of comment item.
+        /// ||获取注解项的文本样式。
+        /// </summary>
+        /// <param name="index">the index of item</param>
+        /// <returns></returns> 
         public LabelStyle GetLabelStyle(int index)
         {
             if (index >= 0 && index < items.Count)
@@ -55,7 +84,12 @@ namespace XCharts.Runtime
             }
             return m_LabelStyle;
         }
-
+        /// <summary>
+        /// Get the mark style of comment item.
+        /// ||获取注解项的标记样式。
+        /// </summary>
+        /// <param name="index">the index of item</param>
+        /// <returns></returns>
         public CommentMarkStyle GetMarkStyle(int index)
         {
             if (index >= 0 && index < items.Count)
diff --git a/Runtime/Component/Comment/CommentHander.cs b/Runtime/Component/Comment/CommentHander.cs
index ca49cbaa..82d9abc2 100644
--- a/Runtime/Component/Comment/CommentHander.cs
+++ b/Runtime/Component/Comment/CommentHander.cs
@@ -23,8 +23,12 @@ namespace XCharts.Runtime
                     chart.chartMaxAnchor,
                     chart.chartPivot,
                     chart.chartSizeDelta, -1, chart.childrenNodeNames);
+                var siblingIndex = comment.layer == CommentLayer.Upper
+                    ? chart.topPainter.transform.GetSiblingIndex() - 1
+                    : chart.painter.transform.GetSiblingIndex() + 1;
 
                 commentObj.SetActive(comment.show);
+                commentObj.transform.SetSiblingIndex(siblingIndex);
                 commentObj.hideFlags = chart.chartHideFlags;
                 ChartHelper.HideAllObject(commentObj);
                 for (int i = 0; i < comment.items.Count; i++)
diff --git a/Runtime/Component/Comment/CommentItem.cs b/Runtime/Component/Comment/CommentItem.cs
index 10363288..7ff933f6 100644
--- a/Runtime/Component/Comment/CommentItem.cs
+++ b/Runtime/Component/Comment/CommentItem.cs
@@ -11,11 +11,11 @@ namespace XCharts.Runtime
     public class CommentItem : ChildComponent
     {
         [SerializeField] private bool m_Show = true;
-        [SerializeField] private string m_Content = "comment";
+        [SerializeField] private string m_Content = "xcharts";
         [SerializeField] private Rect m_MarkRect;
         [SerializeField] private CommentMarkStyle m_MarkStyle = new CommentMarkStyle() { show = false };
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle() { show = false };
-        [SerializeField][Since("v3.5.0")] private Location m_Location = new Location() { align = Location.Align.TopLeft, top = 0.125f };
+        [SerializeField][Since("v3.5.0")] private Location m_Location = new Location() { align = Location.Align.BottomRight, right = 0.1f, bottom = 0.05f };
 
         public ChartLabel labelObject { get; set; }
 
diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index 7c744a2c..63cce895 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -69,6 +69,7 @@ namespace XCharts.Runtime
         /// </summary>
         public Vector3 chartPosition { get { return m_ChartPosition; } }
         public Rect chartRect { get { return m_ChartRect; } }
+        public Painter topPainter { get { return m_PainterTop; } }
         /// <summary>
         /// The callback function of chart init.
         /// ||图表的初始化完成回调。