diff --git a/ContextMenuManager/BulePointLilac.Controls/MySideBar.cs b/ContextMenuManager/BulePointLilac.Controls/MySideBar.cs
index 017d7d2..82fbe07 100644
--- a/ContextMenuManager/BulePointLilac.Controls/MySideBar.cs
+++ b/ContextMenuManager/BulePointLilac.Controls/MySideBar.cs
@@ -28,12 +28,13 @@ namespace BulePointLilac.Controls
             set
             {
                 itemNames = value;
-                if(value != null)
+                if(value != null && !IsFixedWidth)
                 {
                     int maxWidth = 0;
-                    Array.ForEach(value, item => maxWidth = Math.Max(maxWidth, TextRenderer.MeasureText(item, Font).Width));
-                    PnlHovered.Width = PnlSelected.Width = Width = maxWidth + 2 * HorizontalSpace;
+                    Array.ForEach(value, str => maxWidth = Math.Max(maxWidth, GetItemWidth(str)));
+                    this.Width = maxWidth + 2 * HorizontalSpace;
                 }
+                PnlHovered.Width = PnlSelected.Width = this.Width;
                 PaintItems();
                 SelectIndex = -1;
             }
@@ -49,6 +50,7 @@ namespace BulePointLilac.Controls
         public int HorizontalSpace { get; set; } = 20.DpiZoom();//项文字与项左右边缘距离
         private float VerticalSpace => (itemHeight - TextHeight) * 0.5F;//项文字与项上下边缘距离
         private int TextHeight => TextRenderer.MeasureText(" ", Font).Height;//项文字高度
+        public bool IsFixedWidth { get; set; } = true;//是否固定宽度
 
         public Color SeparatorColor
         {
@@ -95,6 +97,13 @@ namespace BulePointLilac.Controls
             Width = 1,
         };
 
+        /// <summary>获取项目宽度</summary>
+        public int GetItemWidth(string str)
+        {
+            return TextRenderer.MeasureText(str, Font).Width + 2 * HorizontalSpace;
+        }
+
+        /// <summary>绘制所有项目作为底图</summary>
         private void PaintItems()
         {
             this.BackgroundImage = new Bitmap(Width, Height);
@@ -120,6 +129,7 @@ namespace BulePointLilac.Controls
             }
         }
 
+        /// <summary>刷新选中的项目</summary>
         private void RefreshItem(Panel panel, int index)
         {
             panel.Top = index < 0 ? -ItemHeight : (TopSpace + index * ItemHeight);
@@ -127,14 +137,17 @@ namespace BulePointLilac.Controls
             panel.Refresh();
         }
 
+        /// <summary>绘制选中的项目</summary>
         private void PaintItem(object sender, PaintEventArgs e)
         {
             Control ctr = (Control)sender;
             e.Graphics.Clear(ctr.BackColor);
             e.Graphics.DrawString(ctr.Text, Font,
-                new SolidBrush(ctr.ForeColor), new PointF(HorizontalSpace, VerticalSpace));
+                new SolidBrush(ctr.ForeColor),
+                new PointF(HorizontalSpace, VerticalSpace));
         }
-
+        
+        /// <summary>显示选中的项目</summary>
         private void ShowItem(Panel panel, MouseEventArgs e)
         {
             if(itemNames == null) return;
diff --git a/ContextMenuManager/MainForm.cs b/ContextMenuManager/MainForm.cs
index caaaeda..bc5a694 100644
--- a/ContextMenuManager/MainForm.cs
+++ b/ContextMenuManager/MainForm.cs
@@ -1,5 +1,7 @@
 using BulePointLilac.Controls;
 using ContextMenuManager.Controls;
+using System;
+using System.Linq;
 
 namespace ContextMenuManager
 {
@@ -7,6 +9,7 @@ namespace ContextMenuManager
     {
         public MainForm()
         {
+            SetSideBarWidth();
             this.Text = AppString.General.AppName;
             this.Controls.Add(new ExplorerRestarter());
             shellList.Owner = shellNewList.Owner = sendToList.Owner = openWithList.Owner
@@ -281,5 +284,13 @@ namespace ContextMenuManager
                     return;
             }
         }
+
+        private void SetSideBarWidth()
+        {
+            int maxWidth = 0;
+            string[] strs = GeneralItems.Concat(TypeItems).Concat(OtherRuleItems).Concat(AboutItems).ToArray();
+            Array.ForEach(strs, str => maxWidth = Math.Max(maxWidth, SideBar.GetItemWidth(str)));
+            SideBar.Width = maxWidth;
+        }
     }
 }
\ No newline at end of file