diff --git a/components/canvas/nodes/ImageNode.tsx b/components/canvas/nodes/ImageNode.tsx
index abf78862d..b713e9cb6 100644
--- a/components/canvas/nodes/ImageNode.tsx
+++ b/components/canvas/nodes/ImageNode.tsx
@@ -357,6 +357,22 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
   }, [allNodes, data.metadata, data.originalSrc, data.src, node.connections, node.id]);
 
   const hasCompareSource = Boolean(data.src) && Boolean(compareSource);
+  const compareButtonVisualSize = useMemo(() => {
+    const minSide = Math.max(1, Math.min(node.size.width || 0, node.size.height || 0));
+    return Math.round(Math.max(32, Math.min(42, minSide * 0.12)));
+  }, [node.size.height, node.size.width]);
+  const compareButtonHitSize = useMemo(
+    () => Math.max(44, compareButtonVisualSize + 12),
+    [compareButtonVisualSize]
+  );
+  const compareButtonIconSize = useMemo(
+    () => Math.round(Math.max(14, Math.min(20, compareButtonVisualSize * 0.45))),
+    [compareButtonVisualSize]
+  );
+  const compareButtonInset = useMemo(
+    () => Math.max(6, Math.min(12, Math.round(compareButtonVisualSize * 0.24))),
+    [compareButtonVisualSize]
+  );
   
   // 退出拾取模式时清空状态
   useEffect(() => {
@@ -1716,13 +1732,18 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
               <button
                 type="button"
                 className={cn(
-                  "pointer-events-auto absolute right-2 top-1/2 z-[220] inline-flex h-14 w-14 -translate-y-1/2 items-center justify-center rounded-full border text-white transition-all data-[state=on]:scale-100",
+                  "pointer-events-auto absolute top-1/2 z-[220] inline-flex -translate-y-1/2 items-center justify-center rounded-full text-white transition-all data-[state=on]:scale-100",
                   isCompareMode
-                    ? "border-sky-100 bg-sky-500/95 shadow-[0_0_0_3px_rgba(255,255,255,0.55),0_10px_22px_rgba(14,165,233,0.42)]"
-                    : "border-white/80 bg-black/78 shadow-[0_8px_18px_rgba(0,0,0,0.34)] hover:bg-black/88"
+                    ? "shadow-[0_0_0_3px_rgba(255,255,255,0.45),0_10px_22px_rgba(14,165,233,0.35)]"
+                    : "shadow-[0_8px_18px_rgba(0,0,0,0.28)]"
                 )}
                 data-state={isCompareMode ? "on" : "off"}
                 data-canvas-no-drag="true"
+                style={{
+                  width: `${compareButtonHitSize}px`,
+                  height: `${compareButtonHitSize}px`,
+                  right: `${compareButtonInset}px`,
+                }}
                 onPointerDown={(event) => {
                   event.preventDefault();
                   event.stopPropagation();
@@ -1734,19 +1755,32 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
                 title={isCompareMode ? "对比已开启" : "开启对比"}
                 aria-label={isCompareMode ? "对比已开启" : "开启对比"}
               >
-                <svg
-                  viewBox="0 0 24 24"
-                  className="h-6 w-6"
-                  fill="none"
-                  stroke="currentColor"
-                  strokeWidth="2"
-                  strokeLinecap="round"
-                  strokeLinejoin="round"
+                <span
+                  className={cn(
+                    "inline-flex items-center justify-center rounded-full border text-white transition-colors",
+                    isCompareMode
+                      ? "border-sky-100 bg-sky-500/95"
+                      : "border-white/80 bg-black/78 hover:bg-black/88"
+                  )}
+                  style={{
+                    width: `${compareButtonVisualSize}px`,
+                    height: `${compareButtonVisualSize}px`,
+                  }}
                 >
-                  <rect x="3" y="4" width="18" height="16" rx="4.5" />
-                  <path d="M12 4v16" />
-                  <circle cx="12" cy="12" r="2.8" fill="currentColor" stroke="none" />
-                </svg>
+                  <svg
+                    viewBox="0 0 24 24"
+                    fill="none"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    style={{ width: `${compareButtonIconSize}px`, height: `${compareButtonIconSize}px` }}
+                  >
+                    <rect x="3" y="4" width="18" height="16" rx="4.5" />
+                    <path d="M12 4v16" />
+                    <circle cx="12" cy="12" r="2.8" fill="currentColor" stroke="none" />
+                  </svg>
+                </span>
               </button>
             )}
           </div>