diff --git a/backend/src/module/rss/analyser.py b/backend/src/module/rss/analyser.py
index 457098e69..291bee9a1 100644
--- a/backend/src/module/rss/analyser.py
+++ b/backend/src/module/rss/analyser.py
@@ -31,7 +31,8 @@ def official_title_parser(self, bangumi: Bangumi, rss: RSSItem, torrent: Torrent
             bangumi.poster_link = poster_link
         else:
             pass
-        bangumi.official_title = re.sub(r"[/:.\\]", " ", bangumi.official_title)
+        if bangumi.official_title:
+            bangumi.official_title = re.sub(r"[/:.\\]", " ", bangumi.official_title)
 
     @staticmethod
     def get_rss_torrents(rss_link: str, full_parse: bool = True) -> list[Torrent]: