diff --git a/lottery.py b/lottery.py
index cd198a4..aed3201 100644
--- a/lottery.py
+++ b/lottery.py
@@ -45,7 +45,7 @@ def __init__(self, topic_id):
     @classmethod
     def from_url(cls, url):
         """从URL中解析主题信息"""
-        pattern = r"/t/topic/(\d+)(?:/\d+)?"
+        pattern = r"/t/(?:[^/]+/)?(\d+)(?:/\d+)?"
         match = re.search(pattern, url)
         if not match:
             raise ValidationError("无法从URL中解析出主题ID")