diff --git a/apps/api/app/api/routes/scripts_ai.py b/apps/api/app/api/routes/scripts_ai.py
index 5858aa3a4..9bffd1c62 100644
--- a/apps/api/app/api/routes/scripts_ai.py
+++ b/apps/api/app/api/routes/scripts_ai.py
@@ -12,11 +12,6 @@ import logging
 import os
 import re
 import tempfile
-from contextvars import ContextVar
-
-# 抖音提取调试信息（单次请求上下文，用于排查 yt-dlp/cookies 问题）
-_douyin_debug: ContextVar[dict] = ContextVar("_douyin_debug", default={})
-
 from app.auth import AuthenticatedUser, get_current_user
 from app.dependencies import get_db_session
 from app.schemas.scripts_ai import (
@@ -82,11 +77,8 @@ def _cookies_file_exists() -> bool:
 
 
 def _dbg(key: str, val: str) -> None:
-    """记录抖音调试信息（会被中间件写入 X-Douyin-Debug-* 响应头）。"""
-    try:
-        _douyin_debug.get()[key] = str(val)[:200]
-    except Exception:
-        pass
+    """记录抖音调试信息（debug 日志）。"""
+    logger.debug("douyin_extract %s=%s", key, str(val)[:200])
 
 
 def _is_cookies_related_error(msg: str) -> bool: