diff --git a/number_parser.py b/number_parser.py
index 95b7b51..8ab9d4b 100755
--- a/number_parser.py
+++ b/number_parser.py
@@ -47,7 +47,7 @@ def get_number(debug: bool, file_path: str) -> str:
             lower_check = filename.lower()
             if 'fc2' in lower_check:
                 filename = lower_check.replace('ppv', '').replace('--', '-').replace('_', '-').upper()
-            filename = re.sub("-cd\d{1,2}", "", filename, flags=re.IGNORECASE)
+            filename = re.sub("[-_]cd\d{1,2}", "", filename, flags=re.IGNORECASE)
             if not re.search("-|_", filename): # 去掉-CD1之后再无-的情况，例如n1012-CD1.wmv
                 return str(re.search(r'\w+', filename[:filename.find('.')], re.A).group())
             file_number = str(re.search(r'\w+(-|_)\w+', filename, re.A).group())