diff --git a/components/image-annotator.tsx b/components/image-annotator.tsx
index 1b63807..6e14a9d 100644
--- a/components/image-annotator.tsx
+++ b/components/image-annotator.tsx
@@ -84,7 +84,7 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel }: ImageAnnotator
     img.src = imageUrl;
   }, [imageUrl]);
 
-  // 初始化 canvas - 适配弹窗大小
+  // 初始化 canvas - 适配弹窗大小，固定编辑器大小，图片缩小显示
   useEffect(() => {
     if (!canvasRef.current || !image || !containerRef.current) return;
 
@@ -93,12 +93,13 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel }: ImageAnnotator
     const context = canvas.getContext("2d");
     if (!context) return;
 
-    // 弹窗内画布区域大小（减去工具栏和边距，考虑并排显示）
+    // 固定弹窗内画布区域大小（减去工具栏和边距，考虑并排显示）
+    // 弹窗固定为 1200px x 550px，画布区域约为 1100px x 350px（单图）或 550px x 350px（双图）
     const containerWidth = processedImageBase64 ? 550 : 1100; // 如果有处理后图片，每个区域550px；否则1100px
-    const containerHeight = 350; // 550 - 工具栏高度
+    const containerHeight = 350; // 550 - 工具栏高度（约200px）
     const scaleX = containerWidth / image.width;
     const scaleY = containerHeight / image.height;
-    const newScale = Math.min(scaleX, scaleY, 1); // 不放大，只缩小
+    const newScale = Math.min(scaleX, scaleY, 1); // 不放大，只缩小以适应固定容器
 
     setScale(newScale);
 
@@ -563,11 +564,16 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel }: ImageAnnotator
   };
 
   return (
-    <div className="fixed inset-0 z-[300] flex items-center justify-center bg-black/60 backdrop-blur-sm" onClick={onCancel}>
-      {/* 弹窗容器 */}
+    <div className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/70 backdrop-blur-md p-4" onClick={onCancel}>
+      {/* 弹窗容器 - 固定在屏幕中央，固定大小 */}
       <div 
         className="flex flex-col overflow-hidden rounded-xl border border-border bg-background shadow-2xl"
-        style={{ width: "1200px", height: "550px" }}
+        style={{ 
+          width: "1200px", 
+          height: "550px",
+          maxWidth: "95vw",
+          maxHeight: "90vh"
+        }}
         onClick={(e) => e.stopPropagation()}
       >
         {/* 顶部标题栏 */}
@@ -774,7 +780,7 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel }: ImageAnnotator
 
       {/* 文字输入弹窗 */}
       {textPosition && (
-        <div className="fixed inset-0 z-[310] flex items-center justify-center bg-black/50" onClick={() => setTextPosition(null)}>
+        <div className="fixed inset-0 z-[10000] flex items-center justify-center bg-black/50 backdrop-blur-sm" onClick={() => setTextPosition(null)}>
           <div className="rounded-lg border bg-background p-4 shadow-xl" onClick={(e) => e.stopPropagation()}>
             <div className="mb-3 text-sm font-medium">输入标注文字</div>
             <input