diff --git a/ECharts/ChartOpertation.cs b/ECharts/ChartOpertation.cs
index 2e997b4..0e818b1 100644
--- a/ECharts/ChartOpertation.cs
+++ b/ECharts/ChartOpertation.cs
@@ -13,14 +13,15 @@ public static class ChartOpertation
         /// <summary>
         /// 饼状图数据处理
         /// </summary>
-        /// <param name="lengendData">图例数据</param>
         /// <param name="seriesData">图表数据</param>
+        /// <param name="lengendData">图例数据</param>
         /// <param name="isShowLengend">是否开启图例</param>
         /// <param name="chartTitle">主标题文本，默认值：''，'\n'指定换行</param>
         /// <param name="chartSubTitle"> 副标题文本，默认值：''，'\n'指定换行</param>
         /// <param name="isCalculable"> 是否启用拖拽重计算特性，默认关闭</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns></returns>
-        public static string ChartPieDataProcess(IEnumerable<ChartPieSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartTitle = null, string chartSubTitle = null, bool isCalculable = false)
+        public static string ChartPieDataProcess(IEnumerable<ChartPieSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartTitle = null, string chartSubTitle = null, bool isCalculable = false, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -49,7 +50,7 @@ public static string ChartPieDataProcess(IEnumerable<ChartPieSeries> seriesData,
                 legend = chartLegend,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
         /// <summary>
@@ -64,8 +65,9 @@ public static string ChartPieDataProcess(IEnumerable<ChartPieSeries> seriesData,
         /// <param name="chartSubTitle">副标题文本，默认值：""，"\n"指定换行</param>
         /// <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
         /// <param name="chartYAxisName">Y轴名称</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns>图表所有数据</returns>
-        public static string ChartLineDataProcess(string chartTitle, string fm, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null)
+        public static string ChartLineDataProcess(string chartTitle, string fm, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -115,7 +117,7 @@ public static string ChartLineDataProcess(string chartTitle, string fm, List<obj
                 yAxis = chartYAxis,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
         /// <summary>
@@ -131,8 +133,9 @@ public static string ChartLineDataProcess(string chartTitle, string fm, List<obj
         /// <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
         /// <param name="chartYAxisName">Y轴名称</param>
         /// <param name="chartTimeline">时间轴</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns>图表所有数据</returns>
-        public static string TimeLineChartLineDataProcess(string chartTitle, string fm, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null, ChartTimeline chartTimeline = null)
+        public static string TimeLineChartLineDataProcess(string chartTitle, string fm, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null, ChartTimeline chartTimeline = null, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -179,7 +182,7 @@ public static string TimeLineChartLineDataProcess(string chartTitle, string fm,
                 timeline = chartTimeline,//时间轴设置
                 options = chartOptions
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
         /// <summary>
@@ -194,8 +197,9 @@ public static string TimeLineChartLineDataProcess(string chartTitle, string fm,
         /// <param name="chartSubTitle">副标题文本，默认值：''，'\n'指定换行</param>
         /// <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
         /// <param name="chartYAxisName">Y轴名称</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns>图表所有数据</returns>
-        public static string ChartBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, ChartGrid chartGrid, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null)
+        public static string ChartBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, ChartGrid chartGrid, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string chartYAxisName = null, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -245,7 +249,7 @@ public static string ChartBarDataProcess(string chartTitle, List<object> chartAx
                 yAxis = chartYAxis,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
         /// <summary>
@@ -260,8 +264,9 @@ public static string ChartBarDataProcess(string chartTitle, List<object> chartAx
         /// <param name="isShowLengend"></param>
         /// <param name="chartSubTitle"></param>
         /// <param name="isCalculable"></param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns></returns>
-        public static string ChartBarAndLineDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, List<ChartAxis> chartYaxis, ChartGrid chartGrid, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false)
+        public static string ChartBarAndLineDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, List<ChartAxis> chartYaxis, ChartGrid chartGrid, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -303,7 +308,7 @@ public static string ChartBarAndLineDataProcess(string chartTitle, List<object>
                 yAxis = chartYAxis,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
 
@@ -322,8 +327,9 @@ public static string ChartBarAndLineDataProcess(string chartTitle, List<object>
         /// <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
         /// <param name="isShowY1AxisTick">是否显示Y轴坐标轴小标记</param>
         /// <param name="isShowY1AxisLine">是否显示坐标轴线</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns>图表所有数据</returns>
-        public static string ChartTiaoBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, ChartGrid chartGrid, bool isShowX = false, bool isShowY = true, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, bool isShowY1AxisTick = false, bool isShowY1AxisLine = false)
+        public static string ChartTiaoBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, List<string> lengendData, ChartGrid chartGrid, bool isShowX = false, bool isShowY = true, bool isShowLengend = false, string chartSubTitle = null, bool isCalculable = false, bool isShowY1AxisTick = false, bool isShowY1AxisLine = false, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -376,7 +382,7 @@ public static string ChartTiaoBarDataProcess(string chartTitle, List<object> cha
                 yAxis = chartYAxis,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
 
         /// <summary>
@@ -389,8 +395,9 @@ public static string ChartTiaoBarDataProcess(string chartTitle, List<object> cha
         /// <param name="chartGrid">直角坐标系内绘图网格</param>
         /// <param name="chartSubTitle">副标题文本，默认值：''，'\n'指定换行</param>
         /// <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
+        /// <param name="dateTimeFormat"></param>
         /// <returns>图表所有数据</returns>
-        public static string ChartDuoWeiTiaoBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, ChartLegend chartLegend, ChartGrid chartGrid, string chartSubTitle = null, bool isCalculable = false)
+        public static string ChartDuoWeiTiaoBarDataProcess(string chartTitle, List<object> chartAxisData, IEnumerable<ChartRightangleSeries> seriesData, ChartLegend chartLegend, ChartGrid chartGrid, string chartSubTitle = null, bool isCalculable = false, string dateTimeFormat = "yyyy-MM-dd")
         {
             //标题
             var title = new ChartTitle()
@@ -459,7 +466,7 @@ public static string ChartDuoWeiTiaoBarDataProcess(string chartTitle, List<objec
                 yAxis = chartYAxis,
                 series = seriesDatas
             };
-            return jsonData.ToJson();
+            return jsonData.ToJson(dateTimeFormat);
         }
     }
 }
\ No newline at end of file
diff --git a/ECharts/ECharts.Net.csproj b/ECharts/ECharts.Net.csproj
index 03af2ae..8865814 100644
--- a/ECharts/ECharts.Net.csproj
+++ b/ECharts/ECharts.Net.csproj
@@ -7,7 +7,7 @@
     <Description>Based on ECharts(https://echarts.baidu.com/echarts2/doc/doc.html) tool library,support .NET Framework and .NET Core</Description>
     <AssemblyName>ECharts.Net</AssemblyName>
     <RootNamespace>ECharts.Net</RootNamespace>
-    <Version>1.1</Version>
+    <Version>1.1.1</Version>
     <PackageProjectUrl>https://xhanb.github.io/ECharts.Net/</PackageProjectUrl>
     <RepositoryUrl>https://github.com/xhanb/ECharts.Net</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
diff --git a/ECharts/ECharts.Net.xml b/ECharts/ECharts.Net.xml
index f182769..dd961a6 100644
--- a/ECharts/ECharts.Net.xml
+++ b/ECharts/ECharts.Net.xml
@@ -2488,19 +2488,20 @@
             图表操作数据处理类
             </summary>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartPieDataProcess(System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartPieSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.String,System.Boolean)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartPieDataProcess(System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartPieSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.String,System.Boolean,System.String)">
             <summary>
             饼状图数据处理
             </summary>
-            <param name="lengendData">图例数据</param>
             <param name="seriesData">图表数据</param>
+            <param name="lengendData">图例数据</param>
             <param name="isShowLengend">是否开启图例</param>
             <param name="chartTitle">主标题文本，默认值：''，'\n'指定换行</param>
             <param name="chartSubTitle"> 副标题文本，默认值：''，'\n'指定换行</param>
             <param name="isCalculable"> 是否启用拖拽重计算特性，默认关闭</param>
+            <param name="dateTimeFormat"></param>
             <returns></returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartLineDataProcess(System.String,System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.Boolean,System.String)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartLineDataProcess(System.String,System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.Boolean,System.String,System.String)">
             <summary>
             线性图数据处理
             </summary>
@@ -2513,9 +2514,10 @@
             <param name="chartSubTitle">副标题文本，默认值：""，"\n"指定换行</param>
             <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
             <param name="chartYAxisName">Y轴名称</param>
+            <param name="dateTimeFormat"></param>
             <returns>图表所有数据</returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.TimeLineChartLineDataProcess(System.String,System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.Boolean,System.String,ECharts.Net.ChartComponent.ChartTimeline)">
+        <member name="M:ECharts.Net.ChartOpertation.TimeLineChartLineDataProcess(System.String,System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Boolean,System.String,System.Boolean,System.String,ECharts.Net.ChartComponent.ChartTimeline,System.String)">
             <summary>
             时间轴线性图数据处理
             </summary>
@@ -2529,9 +2531,10 @@
             <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
             <param name="chartYAxisName">Y轴名称</param>
             <param name="chartTimeline">时间轴</param>
+            <param name="dateTimeFormat"></param>
             <returns>图表所有数据</returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.String,System.Boolean,System.String)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.String,System.Boolean,System.String,System.String)">
             <summary>
             柱状图数据处理
             </summary>
@@ -2544,9 +2547,10 @@
             <param name="chartSubTitle">副标题文本，默认值：''，'\n'指定换行</param>
             <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
             <param name="chartYAxisName">Y轴名称</param>
+            <param name="dateTimeFormat"></param>
             <returns>图表所有数据</returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartBarAndLineDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Collections.Generic.List{ECharts.Net.ChartComponent.ChartAxis},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.String,System.Boolean)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartBarAndLineDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},System.Collections.Generic.List{ECharts.Net.ChartComponent.ChartAxis},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.String,System.Boolean,System.String)">
             <summary>
             折柱混搭
             </summary>
@@ -2559,9 +2563,10 @@
             <param name="isShowLengend"></param>
             <param name="chartSubTitle"></param>
             <param name="isCalculable"></param>
+            <param name="dateTimeFormat"></param>
             <returns></returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartTiaoBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.Boolean,System.Boolean,System.String,System.Boolean,System.Boolean,System.Boolean)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartTiaoBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},System.Collections.Generic.List{System.String},ECharts.Net.ChartComponent.ChartGrid,System.Boolean,System.Boolean,System.Boolean,System.String,System.Boolean,System.Boolean,System.Boolean,System.String)">
             <summary>
             条形图数据处理
             </summary>
@@ -2577,9 +2582,10 @@
             <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
             <param name="isShowY1AxisTick">是否显示Y轴坐标轴小标记</param>
             <param name="isShowY1AxisLine">是否显示坐标轴线</param>
+            <param name="dateTimeFormat"></param>
             <returns>图表所有数据</returns>
         </member>
-        <member name="M:ECharts.Net.ChartOpertation.ChartDuoWeiTiaoBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},ECharts.Net.ChartComponent.ChartLegend,ECharts.Net.ChartComponent.ChartGrid,System.String,System.Boolean)">
+        <member name="M:ECharts.Net.ChartOpertation.ChartDuoWeiTiaoBarDataProcess(System.String,System.Collections.Generic.List{System.Object},System.Collections.Generic.IEnumerable{ECharts.Net.ChartSeries.ChartRightangleSeries},ECharts.Net.ChartComponent.ChartLegend,ECharts.Net.ChartComponent.ChartGrid,System.String,System.Boolean,System.String)">
             <summary>
             多维条形图数据处理
             </summary>
@@ -2590,6 +2596,7 @@
             <param name="chartGrid">直角坐标系内绘图网格</param>
             <param name="chartSubTitle">副标题文本，默认值：''，'\n'指定换行</param>
             <param name="isCalculable">是否启用拖拽重计算特性，默认关闭</param>
+            <param name="dateTimeFormat"></param>
             <returns>图表所有数据</returns>
         </member>
         <member name="T:ECharts.Net.ChartSeries.ChartChordSeries">