diff --git a/backend/app/services/search_engine.py b/backend/app/services/search_engine.py
index 50775e8..d36151a 100644
--- a/backend/app/services/search_engine.py
+++ b/backend/app/services/search_engine.py
@@ -433,9 +433,10 @@ class AdvancedSearchEngine:
                 for ui in set(age_uis)
             ]))
 
-        # MEDLINE only
+        # MEDLINE only（统一使用 journal.nlm_subsets，与筛选面板计数一致）
         if medline_only:
-            conditions.append(GlobalLiterature.citation_status == 'MEDLINE')
+            _med_subq = select(GlobalJournal.issn).where(GlobalJournal.nlm_subsets.overlap(["M"]))
+            conditions.append(GlobalLiterature.journal_issn.in_(_med_subq))
 
         # Exclude Preprints
         if exclude_preprints: