diff --git a/apps/resm/tasks.py b/apps/resm/tasks.py
index 3da4c96..b1409e7 100644
--- a/apps/resm/tasks.py
+++ b/apps/resm/tasks.py
@@ -607,6 +607,10 @@ def _pdf_page_count(content: bytes):
     (对未压缩对象树有效, Elsevier 的摘要预览页正属此类)。"""
     try:
         from io import BytesIO
+        import logging
+        # 坏 PDF 会让 pypdf 刷大量恢复日志(incorrect header / Cannot find /Root 等),
+        # 这里只关心页数, 静音其 logger 避免污染输出。
+        logging.getLogger("pypdf").setLevel(logging.CRITICAL)
         from pypdf import PdfReader
         return len(PdfReader(BytesIO(content), strict=False).pages)
     except ImportError: