diff --git a/media_platform/douyin/client.py b/media_platform/douyin/client.py
index cfa095e..c361528 100644
--- a/media_platform/douyin/client.py
+++ b/media_platform/douyin/client.py
@@ -39,6 +39,10 @@ from .exception import *
 from .field import *
 from .help import *
 
+# 抖音边缘网关 ArgusSecurityPlugin 要求的请求头。网关目前不校验取值，
+# 传固定字符串即可；将来若开始真校验，会重新出现 "Signature Not Found"。
+DOUYIN_ARGUS_HEADER_VALUE = "1"
+
 
 class DouYinClient(AbstractApiClient, ProxyRefreshMixin):
 
@@ -55,6 +59,15 @@ class DouYinClient(AbstractApiClient, ProxyRefreshMixin):
         self.proxy = proxy
         self.timeout = timeout
         self.headers = headers
+        # 抖音边缘网关的 ArgusSecurityPlugin 会对这批接口做业务前置校验，缺少
+        # x-tt-argus 头时直接 403，响应体为
+        # "Blocked by ArgusSecurityPlugin Uifid Not Found"（补了 uifid 但没这个头则是
+        # "... Signature Not Found"）。当前网关尚未校验该头的值，可传任意字符串；
+        # 一旦升级到真校验，需要改为 WebView 内注入 JS 让页面自带 SDK 补齐。
+        self.headers.setdefault("x-tt-argus", DOUYIN_ARGUS_HEADER_VALUE)
+        uifid = cookie_dict.get("UIFID") or cookie_dict.get("UIFID_TEMP", "")
+        if uifid:
+            self.headers.setdefault("uifid", uifid)
         self._host = "https://www.douyin.com"
         self.cookie_urls = [
             "https://douyin.com",
diff --git a/tests/test_douyin_argus_header.py b/tests/test_douyin_argus_header.py
new file mode 100644
index 0000000..f14c5a5
--- /dev/null
+++ b/tests/test_douyin_argus_header.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2025 relakkes@gmail.com
+#
+# This file is part of MediaCrawler project.
+# Repository: https://github.com/NanmiCoder/MediaCrawler/blob/main/tests/test_douyin_argus_header.py
+# GitHub: https://github.com/NanmiCoder
+# Licensed under NON-COMMERCIAL LEARNING LICENSE 1.1
+#
+
+"""抖音 ArgusSecurityPlugin 请求头的回归测试。
+
+回归背景：抖音在边缘网关挂了 ArgusSecurityPlugin，对一批接口做业务前置校验。
+缺少 ``x-tt-argus`` 请求头时直接 403，响应体为
+``Blocked by ArgusSecurityPlugin Uifid Not Found``；补上 uifid 参数但仍没有这个头
+则是 ``... Signature Not Found``（容易误导成 a_bogus / verifyFp 的问题）。
+网关当前不校验该头的取值，传固定字符串即可。
+
+这里不发起任何网络请求，只断言客户端默认请求头带上了这两个头。
+"""
+
+from __future__ import annotations
+
+import pytest
+
+from media_platform.douyin.client import DOUYIN_ARGUS_HEADER_VALUE, DouYinClient
+
+COOKIE_DICT = {
+    "sessionid": "fake-session",
+    "UIFID": "uifid-from-cookie",
+    "UIFID_TEMP": "uifid-temp-from-cookie",
+}
+
+
+class _StubPage:
+    async def evaluate(self, expression):  # noqa: ANN001
+        return {}
+
+
+def _make_client(cookie_dict: dict) -> DouYinClient:
+    return DouYinClient(
+        headers={"User-Agent": "test-user-agent", "Cookie": "a=1"},
+        playwright_page=_StubPage(),
+        cookie_dict=cookie_dict,
+    )
+
+
+def test_argus_header_is_present_by_default():
+    """x-tt-argus 必须在默认请求头里"""
+    client = _make_client(COOKIE_DICT)
+
+    assert client.headers.get("x-tt-argus") == DOUYIN_ARGUS_HEADER_VALUE
+
+
+def test_uifid_header_comes_from_cookie():
+    """uifid 头取自 cookie 里的 UIFID"""
+    client = _make_client(COOKIE_DICT)
+
+    assert client.headers.get("uifid") == "uifid-from-cookie"
+
+
+def test_uifid_header_falls_back_to_uifid_temp():
+    """没有 UIFID 时退到 UIFID_TEMP"""
+    client = _make_client({"sessionid": "s", "UIFID_TEMP": "temp-only"})
+
+    assert client.headers.get("uifid") == "temp-only"
+
+
+def test_missing_uifid_omits_header():
+    """cookie 里两种都没有时不发这个头（发空值可能被当成「有但为空」）"""
+    client = _make_client({"sessionid": "s"})
+
+    assert client.headers.get("uifid") is None
+    assert client.headers.get("x-tt-argus") == DOUYIN_ARGUS_HEADER_VALUE
+
+
+def test_caller_supplied_values_win():
+    """调用方显式传了同名头时不覆盖"""
+    client = DouYinClient(
+        headers={"User-Agent": "ua", "Cookie": "a=1", "x-tt-argus": "custom"},
+        playwright_page=_StubPage(),
+        cookie_dict=COOKIE_DICT,
+    )
+
+    assert client.headers.get("x-tt-argus") == "custom"