> For the complete documentation index, see [llms.txt](https://help.impact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.impact.com/brand/zh/what-would-you-like-to-learn-about/platform-features/tracking/set-up-tracking/using-the-referring-url-parameter.md).

# 使用引荐 URL 参数

<a href="https://pxa.impact.com/student/activity/1117597?sid=0c0e3e5c-54c9-4435-9bee-ebcdccb7f292&#x26;sid_i=0?utm_source=app.impact.com&#x26;utm_medium=owned-platform&#x26;utm_content=tra-350&#x26;utm_campaign=help-center" class="button primary">参加 PXA 课程</a>

引荐 URL 是 [HTTP 引荐来源](https://en.wikipedia.org/wiki/HTTP_referer) 值，impact.com 会在点击发生时从用户的浏览器中记录该值，它是判断你的网站流量来自哪里的一个很好的指标。不过，作为跟踪来源，它并非 100% 可靠或可信，因为它在很大程度上取决于点击是如何发生的，或链接是如何被打开的。有许多因素会影响哪些内容会作为引荐 URL 发送给 impact.com。

#### 影响引荐 URL 可靠性的因素

如果你在 [*按引荐域名表现*](https://app.impact.com/secure/advertiser/engage/additionalreports/report/viewReport.report?id=5243) 报告中看到点击，并且在 *域名* 列中显示“无引荐域名”状态，这通常意味着由于以下任一原因，没有可用的引荐 URL 信息：

* 用户手动在浏览器地址栏中输入了网站 URL。
* 用户通过浏览器中保存的书签访问了该网站。
* 用户将该网站作为新窗口或标签页中的第一页打开，例如通过右键单击链接。
* 用户在外部应用程序中点击了链接。
* 用户从安全协议（https）切换到了非安全协议（http）。
* 用户从安全 URL（https）切换到了一个完全不同的安全 URL（https）。
* 用户可能安装了安全软件（杀毒软件、防火墙等），它会从所有请求中剥离引荐来源。
* 用户位于一个代理服务器之后，该服务器会从所有请求中剥离引荐来源。
* 用户在未设置引荐来源标头的情况下以程序化方式访问了该网站（例如使用搜索机器人）。
* 某些浏览器的隐私政策会限制访问，以防止 `HTTP_REFERER` 被传递。
* 用户出于隐私原因安装了会阻止它的浏览器附加组件或扩展程序。

{% hint style="info" %}
**注意：** impact.com 建议你在确定应向合作伙伴支付的款项时，不要在支付组中使用引荐 URL 选项，也不要在决策时过度依赖引荐 URL 作为数据来源。
{% endhint %}

<div data-with-frame="true"><figure><img src="/files/630f8fdb20a43c705964d010781bf91915efec14" alt=""><figcaption></figcaption></figure></div>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://help.impact.com/brand/zh/what-would-you-like-to-learn-about/platform-features/tracking/set-up-tracking/using-the-referring-url-parameter.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.