diff --git a/biliarchiver/cli_tools/get_command.py b/biliarchiver/cli_tools/get_command.py
index 443e476..63d697d 100644
--- a/biliarchiver/cli_tools/get_command.py
+++ b/biliarchiver/cli_tools/get_command.py
@@ -156,6 +156,8 @@ async def by_up_videos(url_or_mid: str, truncate: int = int(1e10)) -> Path:
         )
     )
     print(_("（如果最新的视频为合作视频的非主作者，UP 名可能会识别错误，但不影响获取 bvid 列表)"))
+
+    ensure_total_size = True
     while pn < total_size / ps:
         pn += 1
         print(ngettext("获取第 {} 页", "获取第 {} 页", pn).format(pn))
@@ -165,11 +167,16 @@ async def by_up_videos(url_or_mid: str, truncate: int = int(1e10)) -> Path:
 
         if len(bv_ids) >= truncate:
             print("truncate at", truncate)
+            ensure_total_size = False
             break
 
     print(mid, up_name, total_size)
     await client.aclose()
+
     assert len(bv_ids) == len(set(bv_ids)), _("有重复的 bv_id")
+    if ensure_total_size:
+        assert total_size == len(bv_ids), _("视频总数不匹配")
+
     filepath = f"bvids/by-up_videos/mid-{mid}-{int(time.time())}.txt"
     os.makedirs(os.path.dirname(filepath), exist_ok=True)
     abs_filepath = os.path.abspath(filepath)