diff --git a/components/canvas/CanvasChatPanel.tsx b/components/canvas/CanvasChatPanel.tsx
index 72a7935..f65f940 100644
--- a/components/canvas/CanvasChatPanel.tsx
+++ b/components/canvas/CanvasChatPanel.tsx
@@ -856,6 +856,9 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     if (!files) return;
     
     let firstImageUrl: string | null = null;
+    // 记录本次上传开始时的节点数量，用于计算新图片位置
+    const baseNodeCount = nodes.length;
+    let uploadIndex = 0;
     
     for (const file of Array.from(files)) {
       if (!file.type.startsWith('image/')) {
@@ -907,10 +910,12 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
         
         // 获取图片原始尺寸后添加到画布
         const dimensions = await getImageDimensions(imageUrl);
-        const existingNodes = nodes.length;
+        // 使用 baseNodeCount + uploadIndex 计算位置，确保多张图片不重叠
+        const nodeIndex = baseNodeCount + uploadIndex;
         const spacing = 20;
-        const x = 100 + (existingNodes % 3) * (dimensions.width + spacing);
-        const y = 100 + Math.floor(existingNodes / 3) * (dimensions.height + spacing);
+        const x = 100 + (nodeIndex % 3) * (dimensions.width + spacing);
+        const y = 100 + Math.floor(nodeIndex / 3) * (dimensions.height + spacing);
+        uploadIndex++; // 递增索引
         
         addNode({
           type: 'image',