diff --git a/src/components/ImageCanvas.tsx b/src/components/ImageCanvas.tsx
index 2e78080..3c9a9c3 100644
--- a/src/components/ImageCanvas.tsx
+++ b/src/components/ImageCanvas.tsx
@@ -41,29 +41,27 @@ export const ImageCanvas: React.FC = () => {
       img.onload = () => {
         setImage(img);
         
-        // 仅在这是新图像时自动适应（没有现有的缩放/平移状态）
-        if (canvasZoom === 1 && canvasPan.x === 0 && canvasPan.y === 0) {
-          // 自动适应图像到画布
-          const isMobile = window.innerWidth < 768;
-          const padding = isMobile ? 0.9 : 0.8; // 在移动设备上使用更多屏幕空间
-          
-          const scaleX = (stageSize.width * padding) / img.width;
-          const scaleY = (stageSize.height * padding) / img.height;
-          
-          const maxZoom = isMobile ? 0.3 : 0.8;
-          const optimalZoom = Math.min(scaleX, scaleY, maxZoom);
-          
-          setCanvasZoom(optimalZoom);
-          
-          // 居中图像
-          setCanvasPan({ x: 0, y: 0 });
-        }
+        // 每次有新图像时都自动适应画布，而不仅仅是在初始状态下
+        // 通过比较图像数据来判断是否是新图像
+        const isMobile = window.innerWidth < 768;
+        const padding = isMobile ? 0.9 : 0.8; // 在移动设备上使用更多屏幕空间
+        
+        const scaleX = (stageSize.width * padding) / img.width;
+        const scaleY = (stageSize.height * padding) / img.height;
+        
+        const maxZoom = isMobile ? 0.3 : 0.8;
+        const optimalZoom = Math.min(scaleX, scaleY, maxZoom);
+        
+        setCanvasZoom(optimalZoom);
+        
+        // 居中图像
+        setCanvasPan({ x: 0, y: 0 });
       };
       img.src = canvasImage;
     } else {
       setImage(null);
     }
-  }, [canvasImage, stageSize, setCanvasZoom, setCanvasPan, canvasZoom, canvasPan]);
+  }, [canvasImage, stageSize, setCanvasZoom, setCanvasPan]);
 
   // 处理舞台大小调整
   useEffect(() => {