diff --git a/SunnyUI/Charts/UIBarChart.cs b/SunnyUI/Charts/UIBarChart.cs
index 152ca36f..1df45e65 100644
--- a/SunnyUI/Charts/UIBarChart.cs
+++ b/SunnyUI/Charts/UIBarChart.cs
@@ -220,7 +220,7 @@ namespace Sunny.UI
                     foreach (var series in Option.Series)
                     {
                         str += '\n';
-                        str += series.Name + " : " + series.Data[i].ToString(Option.ToolTip.ValueFormat);
+                        //str += series.Name + " : " + series.Data[i].ToString(Option.ToolTip.ValueFormat);
                     }
 
                     Bars[0][i].Tips = str;
@@ -527,23 +527,23 @@ namespace Sunny.UI
 
                     if (Option.ShowValue)
                     {
-                        string value = info.Value.ToString(Option.ToolTip.ValueFormat);
-                        SizeF sf = g.MeasureString(value, TempFont);
-                        if (info.Top)
-                        {
-                            float top = info.Rect.Top - sf.Height;
-                            if (top > Option.Grid.Top)
-                            {
-                                g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, top);
-                            }
-                        }
-                        else
-                        {
-                            if (info.Rect.Bottom + sf.Height + Option.Grid.Bottom < Height)
-                            {
-                                g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, info.Rect.Bottom);
-                            }
-                        }
+                        //string value = info.Value.ToString(Option.ToolTip.ValueFormat);
+                        //SizeF sf = g.MeasureString(value, TempFont);
+                        //if (info.Top)
+                        //{
+                        //    float top = info.Rect.Top - sf.Height;
+                        //    if (top > Option.Grid.Top)
+                        //    {
+                        //        g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, top);
+                        //    }
+                        //}
+                        //else
+                        //{
+                        //    if (info.Rect.Bottom + sf.Height + Option.Grid.Bottom < Height)
+                        //    {
+                        //        g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, info.Rect.Bottom);
+                        //    }
+                        //}
                     }
                 }
             }
diff --git a/SunnyUI/Charts/UIBarChartOption.cs b/SunnyUI/Charts/UIBarChartOption.cs
index 9a581d8c..d5c95646 100644
--- a/SunnyUI/Charts/UIBarChartOption.cs
+++ b/SunnyUI/Charts/UIBarChartOption.cs
@@ -125,7 +125,6 @@ namespace Sunny.UI
         public UIBarToolTip()
         {
             Formatter = "{{b}} : {{c}}";
-            ValueFormat = "F0";
         }
     }
 
diff --git a/SunnyUI/Charts/UIDoughnutChart.cs b/SunnyUI/Charts/UIDoughnutChart.cs
index 4df5d4be..8014cf51 100644
--- a/SunnyUI/Charts/UIDoughnutChart.cs
+++ b/SunnyUI/Charts/UIDoughnutChart.cs
@@ -18,6 +18,7 @@
  *
  * 2020-06-06: V2.2.5 增加文件说明
  * 2021-07-22: V3.0.5 增加更新数据的方法
+ * 2022-07-29: V3.2.2 数据显示的小数位数重构调整至Option.DecimalPlaces
 ******************************************************************************/
 
 using System;
@@ -134,7 +135,7 @@ namespace Sunny.UI
                             UITemplate template = new UITemplate(Option.ToolTip.Formatter);
                             template.Set("a", pie.Name);
                             template.Set("b", pie.Data[i].Name);
-                            template.Set("c", pie.Data[i].Value.ToString(Option.ToolTip.ValueFormat));
+                            template.Set("c", pie.Data[i].Value.ToString("F" + Option.DecimalPlaces));
                             template.Set("d", percent.ToString("F2"));
                             text = template.Render();
                         }
diff --git a/SunnyUI/Charts/UIOption.cs b/SunnyUI/Charts/UIOption.cs
index f7233531..9b11424d 100644
--- a/SunnyUI/Charts/UIOption.cs
+++ b/SunnyUI/Charts/UIOption.cs
@@ -36,8 +36,6 @@ namespace Sunny.UI
         public bool Visible { get; set; }
 
         public string Formatter { get; set; }
-
-        public string ValueFormat { get; set; }
     }
 
     public class UIScaleLine
diff --git a/SunnyUI/Charts/UIPieChart.cs b/SunnyUI/Charts/UIPieChart.cs
index 2cf6fea8..7ab0d0d2 100644
--- a/SunnyUI/Charts/UIPieChart.cs
+++ b/SunnyUI/Charts/UIPieChart.cs
@@ -18,6 +18,7 @@
  *
  * 2020-06-06: V2.2.5 增加文件说明
  * 2021-07-22: V3.0.5 增加更新数据的方法
+ * 2022-07-29: V3.2.2 数据显示的小数位数重构调整至Option.DecimalPlaces
 ******************************************************************************/
 
 using System;
@@ -136,13 +137,13 @@ namespace Sunny.UI
                             UITemplate template = new UITemplate(Option.ToolTip.Formatter);
                             template.Set("a", pie.Name);
                             template.Set("b", pie.Data[i].Name);
-                            template.Set("c", pie.Data[i].Value.ToString(Option.ToolTip.ValueFormat));
+                            template.Set("c", pie.Data[i].Value.ToString("F" + Option.DecimalPlaces));
                             template.Set("d", percent.ToString("F2"));
                             text = template.Render();
                         }
                         catch
                         {
-                            text = pie.Data[i].Name + " : " + pie.Data[i].Value.ToString("F2") + "(" + percent.ToString("F2") + "%)";
+                            text = pie.Data[i].Name + " : " + pie.Data[i].Value.ToString("F" + Option.DecimalPlaces) + "(" + percent.ToString("F2") + "%)";
                             if (pie.Name.IsValid()) text = pie.Name + '\n' + text;
                         }
                     }
@@ -191,7 +192,7 @@ namespace Sunny.UI
                         string name = Option.Legend != null ? Option.Legend.Data[azIndex] + " : " : "";
                         if (pie.Data[azIndex].Value > 0)
                         {
-                            string text = name + pie.Data[azIndex].Value.ToString("F0");
+                            string text = name + pie.Data[azIndex].Value.ToString("F" + Option.DecimalPlaces);
                             SizeF sf = g.MeasureString(text, TempFont);
                             PointF pf;
                             int added = 9;
diff --git a/SunnyUI/Charts/UIPieChartOption.cs b/SunnyUI/Charts/UIPieChartOption.cs
index 1d7eeea5..f5281833 100644
--- a/SunnyUI/Charts/UIPieChartOption.cs
+++ b/SunnyUI/Charts/UIPieChartOption.cs
@@ -64,6 +64,13 @@ namespace Sunny.UI
                 return null;
             }
         }
+
+        private int decimalPlaces = 0;
+        public int DecimalPlaces
+        {
+            get => decimalPlaces;
+            set => decimalPlaces = Math.Max(0, value);
+        }
     }
 
     public class UIDoughnutOption : UIOption, IDisposable
@@ -105,6 +112,13 @@ namespace Sunny.UI
                 return null;
             }
         }
+
+        private int decimalPlaces = 0;
+        public int DecimalPlaces
+        {
+            get => decimalPlaces;
+            set => decimalPlaces = Math.Max(0, value);
+        }
     }
 
     public class UIPieToolTip : UIChartToolTip
@@ -112,7 +126,6 @@ namespace Sunny.UI
         public UIPieToolTip()
         {
             Formatter = "{{a}}" + '\n' + "{{b}} : {{c}} ({{d}}%)";
-            ValueFormat = "F0";
             Visible = true;
         }
     }