diff --git a/components/chat.tsx b/components/chat.tsx
index 67c8186..9bea097 100644
--- a/components/chat.tsx
+++ b/components/chat.tsx
@@ -583,21 +583,62 @@ export function Chat({
   };
 
   // 处理画图标注完成
-  const handleDrawingComplete = (annotatedImageUrl: string) => {
-    // annotatedImageUrl 是 base64 data URL 格式
+  const handleDrawingComplete = async (annotatedImageUrl: string) => {
+    // annotatedImageUrl 是 base64 data URL 格式，需要先上传到服务器获取 URL
     const fileName = `annotated-${Date.now()}.png`;
     
-    setAttachments((prev) => [
-      ...prev,
-      {
-        url: annotatedImageUrl,
-        name: fileName,
-        contentType: "image/png",
-      },
-    ]);
+    try {
+      // 如果是 base64 格式，先上传到服务器
+      if (annotatedImageUrl.startsWith("data:")) {
+        toast.info("正在上传标注图片...");
+        
+        // 将 base64 转换为 Blob
+        const response = await fetch(annotatedImageUrl);
+        const blob = await response.blob();
+        
+        // 创建 FormData 上传
+        const formData = new FormData();
+        formData.append("file", blob, fileName);
+        
+        const uploadResponse = await fetch("/api/files/upload", {
+          method: "POST",
+          body: formData,
+        });
+        
+        if (!uploadResponse.ok) {
+          throw new Error("上传失败");
+        }
+        
+        const uploadResult = await uploadResponse.json();
+        
+        setAttachments((prev) => [
+          ...prev,
+          {
+            url: uploadResult.url,
+            name: fileName,
+            contentType: "image/png",
+          },
+        ]);
+        
+        toast.success("标注图片已添加");
+      } else {
+        // 如果已经是 URL，直接使用
+        setAttachments((prev) => [
+          ...prev,
+          {
+            url: annotatedImageUrl,
+            name: fileName,
+            contentType: "image/png",
+          },
+        ]);
+      }
 
-    // 如果输入框为空，自动填入提示词
-    setInput((prev) => prev ? prev : "请根据我的标注修改这张图片：");
+      // 如果输入框为空，自动填入提示词
+      setInput((prev) => prev ? prev : "请根据我的标注修改这张图片：");
+    } catch (error) {
+      console.error("上传标注图片失败:", error);
+      toast.error("上传标注图片失败，请重试");
+    }
   };
 
   // 处理图片变清晰