diff --git a/Scripts/Editor/PropertyDrawers/TooltipDrawer.cs b/Scripts/Editor/PropertyDrawers/TooltipDrawer.cs
index 903a0d62..7bd90003 100644
--- a/Scripts/Editor/PropertyDrawers/TooltipDrawer.cs
+++ b/Scripts/Editor/PropertyDrawers/TooltipDrawer.cs
@@ -19,6 +19,8 @@ namespace XCharts
             SerializedProperty m_FixedHeight = prop.FindPropertyRelative("m_FixedHeight");
             SerializedProperty m_MinWidth = prop.FindPropertyRelative("m_MinWidth");
             SerializedProperty m_MinHeight = prop.FindPropertyRelative("m_MinHeight");
+            SerializedProperty m_FontSize = prop.FindPropertyRelative("m_FontSize");
+            SerializedProperty m_FontStyle = prop.FindPropertyRelative("m_FontStyle");
 
             ChartEditorHelper.MakeFoldout(ref drawRect, ref m_TooltipModuleToggle, "Tooltip", show);
             drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
@@ -36,13 +38,17 @@ namespace XCharts
                 drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                 EditorGUI.PropertyField(drawRect, m_MinHeight);
                 drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
+                EditorGUI.PropertyField(drawRect, m_FontSize);
+                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
+                EditorGUI.PropertyField(drawRect, m_FontStyle);
+                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
             }
         }
 
         public override float GetPropertyHeight(SerializedProperty prop, GUIContent label)
         {
             if (m_TooltipModuleToggle)
-                return 7 * EditorGUIUtility.singleLineHeight + 6 * EditorGUIUtility.standardVerticalSpacing;
+                return 9 * EditorGUIUtility.singleLineHeight + 8 * EditorGUIUtility.standardVerticalSpacing;
             else
                 return EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
         }
diff --git a/Scripts/UI/Component/Tooltip.cs b/Scripts/UI/Component/Tooltip.cs
index 4c897405..9ef240c8 100644
--- a/Scripts/UI/Component/Tooltip.cs
+++ b/Scripts/UI/Component/Tooltip.cs
@@ -47,6 +47,8 @@ namespace XCharts
         [SerializeField] private float m_FixedHeight = 0;
         [SerializeField] private float m_MinWidth = 0;
         [SerializeField] private float m_MinHeight = 0;
+        [SerializeField] private int m_FontSize = 18;
+        [SerializeField] private FontStyle m_FontStyle = FontStyle.Normal;
 
         private GameObject m_GameObject;
         private GameObject m_Content;
@@ -96,6 +98,16 @@ namespace XCharts
         /// 最小高度。如若 fixedHeight 设有值，优先取 fixedHeight。
         /// </summary>
         public float minHeight { get { return m_MinHeight; } set { m_MinHeight = value; } }
+        /// <summary>
+        /// font size.
+        /// 文字的字体大小。
+        /// </summary>
+        public int fontSize { get { return m_FontSize; } set { m_FontSize = value; } }
+        /// <summary>
+        /// font style.
+        /// 文字的字体风格。
+        /// </summary>
+        public FontStyle fontStyle { get { return m_FontStyle; } set { m_FontStyle = value; } }
 
         /// <summary>
         /// The data index currently indicated by Tooltip.
diff --git a/Scripts/UI/Internal/BaseChart.cs b/Scripts/UI/Internal/BaseChart.cs
index d3046d44..26a38192 100644
--- a/Scripts/UI/Internal/BaseChart.cs
+++ b/Scripts/UI/Internal/BaseChart.cs
@@ -308,7 +308,8 @@ namespace XCharts
             DestroyImmediate(tooltipObject.GetComponent<Image>());
             var parent = tooltipObject.transform;
             ChartHelper.HideAllObject(tooltipObject.transform);
-            GameObject content = ChartHelper.AddTooltipContent("content", parent, m_ThemeInfo.font);
+            GameObject content = ChartHelper.AddTooltipContent("content", parent, m_ThemeInfo.font,
+                m_Tooltip.fontSize, m_Tooltip.fontStyle);
             m_Tooltip.SetObj(tooltipObject);
             m_Tooltip.SetContentObj(content);
             m_Tooltip.SetContentBackgroundColor(m_ThemeInfo.tooltipBackgroundColor);
diff --git a/Scripts/UI/Utility/ChartHelper.cs b/Scripts/UI/Utility/ChartHelper.cs
index 4a57f2b0..82b9e0be 100644
--- a/Scripts/UI/Utility/ChartHelper.cs
+++ b/Scripts/UI/Utility/ChartHelper.cs
@@ -174,7 +174,7 @@ namespace XCharts
             return btnObj.GetComponent<Button>();
         }
 
-        public static GameObject AddTooltipContent(string name, Transform parent, Font font)
+        public static GameObject AddTooltipContent(string name, Transform parent, Font font, int fontSize, FontStyle fontStyle)
         {
             var anchorMax = new Vector2(0, 1);
             var anchorMin = new Vector2(0, 1);
@@ -184,7 +184,7 @@ namespace XCharts
             var img = GetOrAddComponent<Image>(tooltipObj);
             img.color = Color.black;
             Text txt = AddTextObject("Text", tooltipObj.transform, font, Color.white, TextAnchor.UpperLeft,
-                    anchorMin, anchorMax, pivot, sizeDelta);
+                    anchorMin, anchorMax, pivot, sizeDelta, fontSize, 0, fontStyle);
             txt.text = "Text";
             txt.transform.localPosition = new Vector2(3, -3);
             tooltipObj.transform.localPosition = Vector3.zero;