diff --git a/app/chain/download.py b/app/chain/download.py
index 7785eabf..eb863709 100644
--- a/app/chain/download.py
+++ b/app/chain/download.py
@@ -36,7 +36,7 @@ class DownloadChain(ChainBase):
         if meta.resource_term:
             msg_text = f"{msg_text}\n质量：{meta.resource_term}"
         if torrent.size:
-            if str(torrent.size).isdigit():
+            if str(torrent.size).replace(".", "").isdigit():
                 size = StringUtils.str_filesize(torrent.size)
             else:
                 size = torrent.size