diff --git a/app/api/news.py b/app/api/news.py
index 119779d..e2eca2a 100644
--- a/app/api/news.py
+++ b/app/api/news.py
@@ -118,8 +118,10 @@ async def list_articles(
     )
     if source:
         if '/' in source:
-            # 신문사/분야 형태 → ai_tags로 필터
-            query = query.where(Document.ai_tags.cast(String).contains(source))
+            # 신문사/분야 형태 → file_path에서 폴더명 매칭
+            # source = "경향신문/문화" → file_path LIKE 'news/경향신문 문화/%'
+            folder = source.replace('/', ' ')
+            query = query.where(Document.file_path.like(f"news/{folder}/%"))
         else:
             # 신문사만 → ai_sub_group
             query = query.where(Document.ai_sub_group == source)