diff --git a/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx b/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
index ccc6df3..05f8506 100644
--- a/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
+++ b/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
@@ -106,13 +106,6 @@ export default function ExportAnnotationDialog({
       const values = await form.validateFields();
       setExporting(true);
 
-      const blob = await downloadAnnotationsUsingGet(
-        projectId,
-        values.format,
-        values.onlyAnnotated,
-        values.includeData
-      );
-
       // 获取文件名
       const formatExt: Record<ExportFormat, string> = {
         json: "json",
@@ -124,15 +117,14 @@ export default function ExportAnnotationDialog({
       const ext = formatExt[values.format as ExportFormat] || "json";
       const filename = `${projectName}_annotations.${ext}`;
 
-      // 下载文件
-      const url = window.URL.createObjectURL(blob as Blob);
-      const a = document.createElement("a");
-      a.href = url;
-      a.download = filename;
-      document.body.appendChild(a);
-      a.click();
-      window.URL.revokeObjectURL(url);
-      document.body.removeChild(a);
+      // 下载文件（download函数内部已处理下载逻辑）
+      await downloadAnnotationsUsingGet(
+        projectId,
+        values.format,
+        values.onlyAnnotated,
+        values.includeData,
+        filename
+      );
 
       message.success("导出成功");
       onClose();
diff --git a/frontend/src/pages/DataAnnotation/annotation.api.ts b/frontend/src/pages/DataAnnotation/annotation.api.ts
index 5acf0a6..9adb01a 100644
--- a/frontend/src/pages/DataAnnotation/annotation.api.ts
+++ b/frontend/src/pages/DataAnnotation/annotation.api.ts
@@ -109,12 +109,13 @@ export function downloadAnnotationsUsingGet(
   projectId: string,
   format: ExportFormat = "json",
   onlyAnnotated: boolean = true,
-  includeData: boolean = false
+  includeData: boolean = false,
+  filename?: string
 ) {
   const params = new URLSearchParams({
     format,
     only_annotated: String(onlyAnnotated),
     include_data: String(includeData),
   });
-  return download(`/api/annotation/export/projects/${projectId}/download?${params.toString()}`);
+  return download(`/api/annotation/export/projects/${projectId}/download?${params.toString()}`, null, filename);
 }