diff --git a/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx b/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
index 8286ba6..ccc6df3 100644
--- a/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
+++ b/frontend/src/pages/DataAnnotation/Home/ExportAnnotationDialog.tsx
@@ -75,8 +75,9 @@ export default function ExportAnnotationDialog({
         .then((res: any) => {
           const data = res?.data || res;
           setStats({
-            totalFiles: data?.totalFiles || 0,
-            annotatedFiles: data?.annotatedFiles || 0,
+            // 兼容 snake_case 和 camelCase
+            totalFiles: data?.totalFiles ?? data?.total_files ?? 0,
+            annotatedFiles: data?.annotatedFiles ?? data?.annotated_files ?? 0,
           });
         })
         .catch((err) => {