> For the complete documentation index, see [llms.txt](https://surge.mitsea.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://surge.mitsea.com/policy-group.md).

# 策略组

策略组可以包含多个策略。它可以是代理策略、另一个策略组，或者是内置策略。

策略组的存在是为了在应用代理规则时，能够灵活地调整具体使用的策略，而不需要修改规则本身。

有几种策略组类型：`select`、`url-test`、`fallback`、`load-balance` 和 `subnet`。策略组应在 `[Proxy Group]` 段落中声明。


---

# 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://surge.mitsea.com/policy-group.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.