diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index 68e2974..9b5fb8c 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -1041,6 +1041,9 @@ namespace JoyD.Windows.CS
                         btnBrushSize10.Visible = false;
                         btnBrushSize15.Visible = false;
                         btnBrushSize25.Visible = false;
+                        // 隐藏区域编号设置控件
+                        txtRegionNumber.Visible = false;
+                        txtRegionNumber.Text = ""; // 清空文本框
                         // 控制分隔条可见性：前后都没有显示的按钮，隐藏分隔条
                         if (firstSeparator != null)
                         {
@@ -1096,12 +1099,6 @@ namespace JoyD.Windows.CS
                         {
                             secondSeparator.Visible = false; // 前面按钮(所有画笔按钮)和后面按钮(新按钮组)都不可见
                         }
-                        // 在初始状态下隐藏区域编号设置控件
-                        if (state == 0)
-                        {
-                            txtRegionNumber.Visible = false;
-                            txtRegionNumber.Text = ""; // 清空文本框
-                        }
                         break;
                     case 1: // 选中区域状态
                         btnDrawRegion.Visible = false;   // 隐藏绘制区域按钮
@@ -1119,6 +1116,17 @@ namespace JoyD.Windows.CS
                         btnNewTempDiff.Visible = false;
                         btnLoadTempDiff.Visible = false;
                         btnSaveTempDiff.Visible = false;
+                        // 显示区域编号设置控件
+                        txtRegionNumber.Visible = true;
+                        // 更新文本框的值为当前选中区域的编号
+                        if (_selectedRegionIndex != -1)
+                        {
+                            var selectedRegion = _drawnRectangles.FirstOrDefault(r => r.Index == _selectedRegionIndex);
+                            if (selectedRegion != null)
+                            {
+                                txtRegionNumber.Text = selectedRegion.Index.ToString();
+                            }
+                        }
                         // 隐藏所有画笔大小按钮
                         btnBrushSize1.Visible = false;
                         btnBrushSize3.Visible = false;
@@ -1154,6 +1162,8 @@ namespace JoyD.Windows.CS
                         btnNewTempDiff.Visible = false;
                         btnLoadTempDiff.Visible = false;
                         btnSaveTempDiff.Visible = false;
+                        // 隐藏区域编号设置控件
+                        txtRegionNumber.Visible = false;
                         // 初始隐藏画笔大小按钮，等待用户选择温差图例后在SelectionChanged事件中显示
                         btnBrushSize1.Visible = false;
                         btnBrushSize3.Visible = false;