diff --git a/apps/resm/tasks.py b/apps/resm/tasks.py
index bc1437b..1248acb 100644
--- a/apps/resm/tasks.py
+++ b/apps/resm/tasks.py
@@ -215,7 +215,7 @@ def get_pdf_from_elsevier(number_of_task=100):
     def_name = get_pdf_from_elsevier.name
     if not show_task_run(def_name):
         return "stoped"
-    qs = Paper.objects.filter(has_fulltext=True, has_fulltext_pdf=False)
+    qs = Paper.objects.filter(has_fulltext=True, has_fulltext_pdf=False, has_abstract=True)
     err_msg = ""
     with requests.Session() as req:
         for paper in qs[:number_of_task]:
@@ -257,13 +257,11 @@ def get_pdf_from_elsevier(number_of_task=100):
 
 
 @shared_task(base=CustomTask)
-def get_pdf_from_oa_url(number_of_task=100):
-    def_name = get_pdf_from_oa_url.name
+def send_download_fulltext_task(number_of_task=100):
+    def_name = send_download_fulltext_task.name
     if not show_task_run(def_name):
         return "stoped"
-    qs = Paper.objects.filter(is_oa=True, has_fulltext=False).exclude(
-        fail_reason__contains="oa_url_request_error"
-    ).exclude(fail_reason__contains="oa_url_not_pdf")
+    qs = Paper.objects.filter(is_oa=True, has_fulltext=False, fail_reason=None)
     
     if not qs.exists():
         return "done"
@@ -290,7 +288,7 @@ def get_pdf_from_oa_url(number_of_task=100):
     qs_count = qs.count()
     if show_task_run(def_name) and qs_count > 0:
         current_app.send_task(
-            "apps.resm.tasks.get_pdf_from_oa_url",
+            def_name,
             kwargs={
                 "number_of_task": number_of_task,
             },
@@ -317,12 +315,19 @@ def download_pdf(paper_id):
     # 设置处理中标记，防止并发重复处理
     cache.set(cache_key, True, timeout=3600) 
     
+    msg = save_pdf_from_oa_url(paper)
+    if paper.has_fulltext_pdf is False:
+        msg = save_pdf_from_openalex(paper)
+    return msg
+
+
+def save_pdf_from_oa_url(paper:Paper):
     try:
         headers = get_random_headers()
         res = requests.get(paper.oa_url, headers=headers, timeout=(3, 15))
     except requests.RequestException as e:
         paper.save_fail_reason("oa_url_request_error")
-        return save_pdf_from_openalex(paper)
+        return f"oa_url_request_error: {str(e)}"
     
     if res.status_code == 200:
         # 检查是否是PDF文件：检查魔数 %PDF 或 content-type
@@ -338,11 +343,6 @@ def download_pdf(paper_id):
             paper.fetch_status = "fulltext_ready"
             paper.save(update_fields=["has_fulltext", "has_fulltext_pdf", "fetch_status", "update_time"])
             return "success"
-        else:
-            return save_pdf_from_openalex(paper)
-    else:
-        return save_pdf_from_openalex(paper)
-
 
 def save_pdf_from_openalex(paper:Paper):
     # 尝试openalex下载
@@ -352,7 +352,7 @@ def save_pdf_from_openalex(paper:Paper):
             "api_key": OPENALEX_KEY
         })
     except requests.RequestException as e:
-        paper.save_fail_reason("oa_url_not_pdf;openalex_pdf_error")
+        paper.save_fail_reason("openalex_pdf_error")
         return f"openalex_pdf_error: {str(e)}"
     if res.status_code == 200:
         paper.save_file_pdf(res.content)
@@ -361,6 +361,6 @@ def save_pdf_from_openalex(paper:Paper):
         paper.fetch_status = "fulltext_ready"
         paper.save(update_fields=["has_fulltext", "has_fulltext_pdf", "fetch_status", "update_time"])
         return "success"
-    else:
-        paper.save_fail_reason("oa_url_not_pdf;openalex_pdf_error")
-        return f"openalex_pdf_error: {res.status_code}"
\ No newline at end of file
+
+
+# https://sci.bban.top/pdf/10.1016/j.conbuildmat.2020.121016.pdf?download=true
\ No newline at end of file