diff --git a/Assets/XCharts/CHANGELOG.md b/Assets/XCharts/CHANGELOG.md
index cb0505f2..6a61bcc2 100644
--- a/Assets/XCharts/CHANGELOG.md
+++ b/Assets/XCharts/CHANGELOG.md
@@ -1,6 +1,7 @@
 
 # 更新日志
 
+* (2019.12.21) 增加`DataZoom`的最小显示数据个数`minShowNum`
 * (2019.12.20) 增加`Demo40_Radar.cs`雷达图代码操作`Demo`
 * (2019.12.20) 添加`RadarChart`相关API接口
 * (2019.12.17) 发布`v1.1.0`版本
diff --git a/Assets/XCharts/Documentation/XCharts配置项手册.md b/Assets/XCharts/Documentation/XCharts配置项手册.md
index f2a23a38..d621e404 100644
--- a/Assets/XCharts/Documentation/XCharts配置项手册.md
+++ b/Assets/XCharts/Documentation/XCharts配置项手册.md
@@ -219,6 +219,7 @@
 * `scrollSensitivity`：缩放区域组件的敏感度。值越高每次缩放所代表的数据越多。
 * `fontSize`：字体大小。
 * `fontStyle`：字体样式。
+* `minShowNum`：最小显示数据个数。当DataZoom放大到最大时，最小显示的数据个数。
 
 ## `VisualMap`
 
diff --git a/Assets/XCharts/Editor/PropertyDrawers/DataZoomDrawer.cs b/Assets/XCharts/Editor/PropertyDrawers/DataZoomDrawer.cs
index 7c001233..c42c8342 100644
--- a/Assets/XCharts/Editor/PropertyDrawers/DataZoomDrawer.cs
+++ b/Assets/XCharts/Editor/PropertyDrawers/DataZoomDrawer.cs
@@ -35,6 +35,7 @@ namespace XCharts
             SerializedProperty m_RangeMode = prop.FindPropertyRelative("m_RangeMode");
             SerializedProperty m_Start = prop.FindPropertyRelative("m_Start");
             SerializedProperty m_End = prop.FindPropertyRelative("m_End");
+            SerializedProperty m_MinShowNum = prop.FindPropertyRelative("m_MinShowNum");
             SerializedProperty m_ScrollSensitivity = prop.FindPropertyRelative("m_ScrollSensitivity");
             SerializedProperty m_FontSize = prop.FindPropertyRelative("m_FontSize");
             SerializedProperty m_FontStyle = prop.FindPropertyRelative("m_FontStyle");
@@ -79,8 +80,11 @@ namespace XCharts
                 drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                 EditorGUI.PropertyField(drawRect, m_End);
                 drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
+                EditorGUI.PropertyField(drawRect, m_MinShowNum);
+                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                 if (m_Start.floatValue < 0) m_Start.floatValue = 0;
                 if (m_End.floatValue > 100) m_End.floatValue = 100;
+                if (m_MinShowNum.intValue < 0) m_MinShowNum.intValue = 0;
                 --EditorGUI.indentLevel;
             }
         }
@@ -91,7 +95,7 @@ namespace XCharts
             int num = 1;
             if (m_DataZoomModuleToggle)
             {
-                num += 7;
+                num += 8;
                 if (prop.FindPropertyRelative("m_SupportSlider").boolValue) num += 6;
 
             }
diff --git a/Assets/XCharts/Runtime/Component/Main/Axis.cs b/Assets/XCharts/Runtime/Component/Main/Axis.cs
index 95822e63..6c5fe660 100644
--- a/Assets/XCharts/Runtime/Component/Main/Axis.cs
+++ b/Assets/XCharts/Runtime/Component/Main/Axis.cs
@@ -267,6 +267,7 @@ namespace XCharts
 
         private int filterStart;
         private int filterEnd;
+        private int filterMinShow;
         private List<string> filterData;
         private List<Text> m_AxisLabelTextList = new List<Text>();
         private GameObject m_TooltipLabel;
@@ -389,14 +390,17 @@ namespace XCharts
             {
                 var startIndex = (int)((data.Count - 1) * dataZoom.start / 100);
                 var endIndex = (int)((data.Count - 1) * dataZoom.end / 100);
-                if (startIndex != filterStart || endIndex != filterEnd || m_NeedUpdateFilterData)
+                if (startIndex != filterStart || endIndex != filterEnd || dataZoom.minShowNum != filterMinShow || m_NeedUpdateFilterData)
                 {
                     filterStart = startIndex;
                     filterEnd = endIndex;
+                    filterMinShow = dataZoom.minShowNum;
                     m_NeedUpdateFilterData = false;
                     if (m_Data.Count > 0)
                     {
                         var count = endIndex == startIndex ? 1 : endIndex - startIndex + 1;
+                        if (count < dataZoom.minShowNum) count = dataZoom.minShowNum;
+                        if (startIndex + count > m_Data.Count - 1) count = m_Data.Count - 1 - startIndex;
                         filterData = m_Data.GetRange(startIndex, count);
                     }
                     else
diff --git a/Assets/XCharts/Runtime/Component/Main/Serie.cs b/Assets/XCharts/Runtime/Component/Main/Serie.cs
index bc7bfd50..7aed7b28 100644
--- a/Assets/XCharts/Runtime/Component/Main/Serie.cs
+++ b/Assets/XCharts/Runtime/Component/Main/Serie.cs
@@ -251,6 +251,7 @@ namespace XCharts
 
         [NonSerialized] private int m_FilterStart;
         [NonSerialized] private int m_FilterEnd;
+        [NonSerialized] private int m_FilterMinShow;
         [NonSerialized] private List<SerieData> m_FilterData;
         [NonSerialized] private Dictionary<int, List<Vector3>> m_UpSmoothPoints = new Dictionary<int, List<Vector3>>();
         [NonSerialized] private Dictionary<int, List<Vector3>> m_DownSmoothPoints = new Dictionary<int, List<Vector3>>();
@@ -965,14 +966,17 @@ namespace XCharts
             {
                 var startIndex = (int)((data.Count - 1) * dataZoom.start / 100);
                 var endIndex = (int)((data.Count - 1) * dataZoom.end / 100);
-                if (startIndex != m_FilterStart || endIndex != m_FilterEnd || m_NeedUpdateFilterData)
+                if (startIndex != m_FilterStart || endIndex != m_FilterEnd || dataZoom.minShowNum != m_FilterMinShow || m_NeedUpdateFilterData)
                 {
                     m_FilterStart = startIndex;
                     m_FilterEnd = endIndex;
+                    m_FilterMinShow = dataZoom.minShowNum;
                     m_NeedUpdateFilterData = false;
                     var count = endIndex == startIndex ? 1 : endIndex - startIndex + 1;
+                    if (count < dataZoom.minShowNum) count = dataZoom.minShowNum;
                     if (m_Data.Count > 0)
                     {
+                        if (startIndex + count > m_Data.Count - 1) count = m_Data.Count - 1 - startIndex;
                         m_FilterData = m_Data.GetRange(startIndex, count);
                     }
                     else