---
title: Cookie
slug: Web/HTTP/Headers/Cookie
tags:
  - Cookies
  - HTTP
  - 请求
  - 超文本传输协议
  - 首部
translation_of: Web/HTTP/Headers/Cookie
---
<div>{{HTTPSidebar}}</div>

<p><strong><code>Cookie</code></strong> 是一个请求首部，其中含有先前由服务器通过 {{HTTPHeader("Set-Cookie")}}  首部投放并存储到客户端的 <a href="/en-US/docs/Web/HTTP/Cookies">HTTP cookies</a>。</p>

<p>这个首部可能会被完全移除，例如在浏览器的隐私设置里面设置为禁用cookie。</p>

<table class="properties">
 <tbody>
  <tr>
   <th scope="row">Header type</th>
   <td>{{Glossary("Request header")}}</td>
  </tr>
  <tr>
   <th scope="row">{{Glossary("Forbidden header name")}}</th>
   <td>yes</td>
  </tr>
 </tbody>
</table>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">Cookie: &lt;cookie-list&gt;
Cookie: name=value
Cookie: name=value; name2=value2; name3=value3</pre>

<dl>
 <dt>&lt;cookie-list&gt;</dt>
 <dd>一系列的名称/值对，形式为 <code>&lt;cookie-name&gt;=&lt;cookie-value&gt;。</code>名称/值对之间用分号和空格 ('; ')隔开。</dd>
</dl>

<h2 id="示例">示例</h2>

<pre>Cookie: PHPSESSID=298zf09hf012fh2; csrftoken=u32t4o3tb3gg43; _gat=1;</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Title</th>
  </tr>
  <tr>
   <td>{{RFC("6265", "Cookie", "5.4")}}</td>
   <td>HTTP State Management Mechanism</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>

<p>{{Compat("http.headers.Cookie")}}</p>

<h2 id="相关内容">相关内容</h2>

<ul>
 <li>{{HTTPHeader("Set-Cookie")}}</li>
 <li>{{domxref("Document.cookie")}}</li>
</ul>