diff --git a/apps/resm/tasks.py b/apps/resm/tasks.py
index e31f6e8..bc1437b 100644
--- a/apps/resm/tasks.py
+++ b/apps/resm/tasks.py
@@ -322,7 +322,7 @@ def download_pdf(paper_id):
         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 f"request_error_final: {str(e)}"
+        return save_pdf_from_openalex(paper)
     
     if res.status_code == 200:
         # 检查是否是PDF文件：检查魔数 %PDF 或 content-type
@@ -339,25 +339,28 @@ def download_pdf(paper_id):
             paper.save(update_fields=["has_fulltext", "has_fulltext_pdf", "fetch_status", "update_time"])
             return "success"
         else:
-            paper.save_fail_reason("oa_url_not_pdf")
-            return "not_pdf"
+            return save_pdf_from_openalex(paper)
     else:
-        # 尝试openalex下载
-        try:
-            res = requests.get(url=f"https://content.openalex.org/works/{paper.openalex_id}.pdf",
-            params={
-                "api_key": OPENALEX_KEY
-            })
-        except requests.RequestException as e:
-            paper.save_fail_reason("oa_url_not_pdf;openalex_pdf_error")
-            return f"openalex_pdf_error: {str(e)}"
-        if res.status_code == 200:
-            paper.save_file_pdf(res.content)
-            paper.has_fulltext = True
-            paper.has_fulltext_pdf = True
-            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
+        return save_pdf_from_openalex(paper)
+
+
+def save_pdf_from_openalex(paper:Paper):
+    # 尝试openalex下载
+    try:
+        res = requests.get(url=f"https://content.openalex.org/works/{paper.openalex_id}.pdf",
+        params={
+            "api_key": OPENALEX_KEY
+        })
+    except requests.RequestException as e:
+        paper.save_fail_reason("oa_url_not_pdf;openalex_pdf_error")
+        return f"openalex_pdf_error: {str(e)}"
+    if res.status_code == 200:
+        paper.save_file_pdf(res.content)
+        paper.has_fulltext = True
+        paper.has_fulltext_pdf = True
+        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