diff --git a/Scripts/UI/Component/Tooltip.cs b/Scripts/UI/Component/Tooltip.cs
index b5617f58..4c897405 100644
--- a/Scripts/UI/Component/Tooltip.cs
+++ b/Scripts/UI/Component/Tooltip.cs
@@ -317,7 +317,7 @@ namespace XCharts
             return dataIndex[0] == index || dataIndex[1] == index;
         }
 
-        public string GetFormatterContent(int dataIndex, Series series, DataZoom dataZoom = null)
+        public string GetFormatterContent(int dataIndex, Series series, string category, DataZoom dataZoom = null)
         {
             if (string.IsNullOrEmpty(m_Formatter))
             {
@@ -331,22 +331,23 @@ namespace XCharts
                     var serie = series.GetSerie(i);
                     if (serie.show)
                     {
+                        var needCategory = serie.type == SerieType.Line || serie.type == SerieType.Bar;
                         var serieData = serie.GetSerieData(dataIndex, dataZoom);
                         if (i == 0)
                         {
                             content = content.Replace("{a}", serie.name);
-                            content = content.Replace("{b}", serieData.name);
+                            content = content.Replace("{b}", needCategory ? category : serieData.name);
                             content = content.Replace("{c}", ChartCached.FloatToStr(serieData.GetData(1)));
-                            if (serie.type == SerieType.Pie)
+                            //if (serie.type == SerieType.Pie)
                             {
                                 var percent = serieData.GetData(1) / serie.yTotal * 100;
                                 content = content.Replace("{d}", ChartCached.FloatToStr(percent, 1));
                             }
                         }
                         content = content.Replace("{a" + i + "}", serie.name);
-                        content = content.Replace("{b" + i + "}", serieData.name);
+                        content = content.Replace("{b" + i + "}", needCategory ? category : serieData.name);
                         content = content.Replace("{c" + i + "}", ChartCached.FloatToStr(serieData.GetData(1)));
-                        if (serie.type == SerieType.Pie)
+                        //if (serie.type == SerieType.Pie)
                         {
                             var percent = serieData.GetData(1) / serie.yTotal * 100;
                             content = content.Replace("{d" + i + "}", ChartCached.FloatToStr(percent, 1));
diff --git a/Scripts/UI/Internal/CoordinateChart.cs b/Scripts/UI/Internal/CoordinateChart.cs
index 15fe49df..384a749b 100644
--- a/Scripts/UI/Internal/CoordinateChart.cs
+++ b/Scripts/UI/Internal/CoordinateChart.cs
@@ -239,7 +239,8 @@ namespace XCharts
             }
             else
             {
-                m_Tooltip.UpdateContentText(m_Tooltip.GetFormatterContent(index, m_Series, m_DataZoom));
+                var category = tempAxis.GetData(index, m_DataZoom);
+                m_Tooltip.UpdateContentText(m_Tooltip.GetFormatterContent(index, m_Series,category, m_DataZoom));
             }
             var pos = m_Tooltip.GetContentPos();
             if (pos.x + m_Tooltip.width > chartWidth)
diff --git a/Scripts/UI/PieChart.cs b/Scripts/UI/PieChart.cs
index 2c41f3fe..828ab896 100644
--- a/Scripts/UI/PieChart.cs
+++ b/Scripts/UI/PieChart.cs
@@ -593,7 +593,7 @@ namespace XCharts
                 }
                 else
                 {
-                    m_Tooltip.UpdateContentText(m_Tooltip.GetFormatterContent(index, m_Series));
+                    m_Tooltip.UpdateContentText(m_Tooltip.GetFormatterContent(index, m_Series, null));
                 }
 
                 var pos = m_Tooltip.GetContentPos();