diff --git a/apps/resm/tasks.py b/apps/resm/tasks.py
index 8b7dcfd..a41b2c0 100644
--- a/apps/resm/tasks.py
+++ b/apps/resm/tasks.py
@@ -42,13 +42,16 @@ def get_paper_meta_from_openalex(publication_year:int, keywords:str="", search:s
         type="article"
     )
     if keywords:
+        # 支持 '|' 表示 OR，',' 表示 AND。去除空白项。
         if "|" in keywords:
-            keywords_list = keywords.split("|")
+            keywords_list = [k.strip() for k in keywords.split("|") if k.strip()]
+            pager = pager.filter_or(keywords={"id": keywords_list})
+        elif "," in keywords:
+            keywords_list = [k.strip() for k in keywords.split(",") if k.strip()]
+            pager = pager.filter(keywords={"id": keywords_list})
         else:
-            keywords_list = [keywords]
-        pager = pager.filter(
-            keywords={"id": keywords_list}
-        )
+            keywords_list = [keywords.strip()]
+            pager = pager.filter(keywords={"id": keywords_list})
     if search:
         pager = pager.filter(
             search=search