diff --git a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
index 114bba8..56e7f05 100644
--- a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
+++ b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
@@ -418,7 +418,30 @@ namespace XP.ImageProcessing.RoiControl.Controls
         private bool _bubbleBrushDragging;
         private readonly System.Collections.Generic.Stack<byte[]> _bubbleUndoStack = new();
 
-        public void SetBubbleTool(BubbleSubTool tool) => _bubbleTool = tool;
+        public void SetBubbleTool(BubbleSubTool tool)
+        {
+            _bubbleTool = tool;
+            // 根据工具设置光标
+            UpdateBubbleToolCursor();
+        }
+
+        private void UpdateBubbleToolCursor()
+        {
+            if (mainCanvas == null) return;
+            if (CurrentMeasureMode != Models.MeasureMode.BubbleMeasure)
+            {
+                mainCanvas.Cursor = Cursors.Arrow;
+                return;
+            }
+            mainCanvas.Cursor = _bubbleTool switch
+            {
+                BubbleSubTool.Wand => Cursors.Cross,
+                BubbleSubTool.Brush => Cursors.Pen,
+                BubbleSubTool.Eraser => Cursors.No,
+                _ => Cursors.Arrow
+            };
+        }
+
         public void SetBubbleThreshold(int val) => _bubbleThreshold = val;
         public void SetBubbleBrushSize(int val) => _bubbleBrushSize = val;
         public void SetBubbleVoidLimit(double val) { _bubbleVoidLimit = val; UpdateBubbleResult(); }