diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index 34f5bea..026acc3 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -652,10 +652,18 @@ namespace JoyD.Windows.CS
                 // 获取相对于图像的坐标作为矩形起始点
                 Point imagePoint = ControlPointToImagePoint(e.Location);
                 
-                // 按下鼠标时初始框以鼠标位置为中心，大小为画笔大小
-                // 计算初始矩形的左上角和右下角（以鼠标位置为中心，减去和加上画笔一半宽高）
-                int halfBrushSize = _currentBrushSize / 2;
-                _rectangleStartPoint = new Point(imagePoint.X - halfBrushSize, imagePoint.Y - halfBrushSize);
+                // 计算画笔大小在图像坐标系统中的缩放值
+                float scaleX = (float)picBoxTemp.Image.Width / picBoxTemp.ClientSize.Width;
+                float scaleY = (float)picBoxTemp.Image.Height / picBoxTemp.ClientSize.Height;
+                
+                // 按下鼠标时初始框以鼠标位置为中心，大小为画笔大小（根据缩放比例调整）
+                float scaledHalfBrushSizeX = _currentBrushSize / 2 * scaleX;
+                float scaledHalfBrushSizeY = _currentBrushSize / 2 * scaleY;
+                
+                _rectangleStartPoint = new Point(
+                    (int)(imagePoint.X - scaledHalfBrushSizeX), 
+                    (int)(imagePoint.Y - scaledHalfBrushSizeY)
+                );
                 _isDrawingRectangle = true;
                 return;
             }
@@ -1272,12 +1280,19 @@ namespace JoyD.Windows.CS
                     // 获取相对于图像的当前坐标
                     Point currentImagePoint = ControlPointToImagePoint(e.Location);
                     
-                    // 计算矩形参数：左上点是起笔方块的左上点，右下点是当前鼠标位置+画笔一半的宽高
-                    int halfBrushSize = _currentBrushSize / 2;
+                    // 计算矩形参数：左上点是起笔方块的左上点，右下点是当前鼠标位置+画笔一半的宽高（考虑缩放比例）
+                    float scaleX = (float)picBoxTemp.Image.Width / picBoxTemp.ClientSize.Width;
+                    float scaleY = (float)picBoxTemp.Image.Height / picBoxTemp.ClientSize.Height;
+                    float scaledHalfBrushSizeX = _currentBrushSize / 2 * scaleX;
+                    float scaledHalfBrushSizeY = _currentBrushSize / 2 * scaleY;
+                    
                     int x = _rectangleStartPoint.X;
                     int y = _rectangleStartPoint.Y;
-                    // 右下角为当前鼠标位置+画笔一半的宽高
-                    Point endPoint = new Point(currentImagePoint.X + halfBrushSize, currentImagePoint.Y + halfBrushSize);
+                    // 右下角为当前鼠标位置+画笔一半的宽高（根据缩放比例调整）
+                    Point endPoint = new Point(
+                        (int)(currentImagePoint.X + scaledHalfBrushSizeX), 
+                        (int)(currentImagePoint.Y + scaledHalfBrushSizeY)
+                    );
                     int width = endPoint.X - x;
                     int height = endPoint.Y - y;
                     
@@ -1756,12 +1771,19 @@ namespace JoyD.Windows.CS
                         // 获取相对于图像的当前坐标
                         Point currentImagePoint = ControlPointToImagePoint(e.Location);
                         
-                        // 计算矩形参数：左上点是起笔方块的左上点，右下点是当前鼠标位置+画笔一半的宽高
-                        int halfBrushSize = _currentBrushSize / 2;
+                        // 计算矩形参数：左上点是起笔方块的左上点，右下点是当前鼠标位置+画笔一半的宽高（考虑缩放比例）
+                        float scaleX = (float)picBoxTemp.Image.Width / picBoxTemp.ClientSize.Width;
+                        float scaleY = (float)picBoxTemp.Image.Height / picBoxTemp.ClientSize.Height;
+                        float scaledHalfBrushSizeX = _currentBrushSize / 2 * scaleX;
+                        float scaledHalfBrushSizeY = _currentBrushSize / 2 * scaleY;
+                        
                         int x = _rectangleStartPoint.X;
                         int y = _rectangleStartPoint.Y;
-                        // 右下角为当前鼠标位置+画笔一半的宽高
-                        Point endPoint = new Point(currentImagePoint.X + halfBrushSize, currentImagePoint.Y + halfBrushSize);
+                        // 右下角为当前鼠标位置+画笔一半的宽高（根据缩放比例调整）
+                        Point endPoint = new Point(
+                            (int)(currentImagePoint.X + scaledHalfBrushSizeX), 
+                            (int)(currentImagePoint.Y + scaledHalfBrushSizeY)
+                        );
                         int width = endPoint.X - x;
                         int height = endPoint.Y - y;