diff --git a/app/modules/bangumi/__init__.py b/app/modules/bangumi/__init__.py
index 26f2d58f0..0adf946fb 100644
--- a/app/modules/bangumi/__init__.py
+++ b/app/modules/bangumi/__init__.py
@@ -406,14 +406,14 @@ class BangumiModule(MediaAuxiliaryProviderMixin, _ModuleBase):
         season: Optional[int] = None,
         episode: Optional[int] = None,
         **kwargs,
-    ) -> Optional[str]:
+    ) -> Optional[bytes]:
         """
         生成Bangumi来源的NFO内容。
 
         :param mediainfo: 统一媒体信息
         :param season: 季号
         :param episode: 集号
-        :return: NFO XML文本
+        :return: UTF-8 编码的 NFO XML 字节
         """
         scrape_source = mediainfo.scrape_source or get_runtime_setting('SCRAP_SOURCE')
         if scrape_source != "bangumi":