> For the complete documentation index, see [llms.txt](https://docs.pancakeswap.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pancakeswap.finance/chinese/huan-ying-lai-dao-pancakeswap/contact-us/faq/what-is-an-approval-transaction.md).
# 什么是授权交易？
**当你第一次兑换或添加流动性时，你必须授权你正在兑换的代币。这将赋予 PancakeSwap 智能合约从你的钱包中兑换该代币的权限。**
授权交易允许 PancakeSwap 拥有从你的钱包中兑换该代币的权限。对于你想要使用 PancakeSwap 兑换的每一种代币，你都必须完成一笔授权交易。
以下是如何完成授权交易的指南：
1. 输入你的兑换详情。
2. 在查看兑换详情后，选择“Confirm swap”。
3. 在你的钱包应用程序或钱包扩展程序中，授权你正在兑换的代币的花费。
允许该代币在你的钱包中用于兑换。
*你的钱包可能会要求你输入你想要授权的代币数量。请输入一个大于或等于你正在兑换的代币数量的数字。*
4. 授权之后，将出现另一笔交易，要求你确认兑换。
5. 一旦兑换被确认，该交易就会被提交到区块链（待处理）。
6. 当交易成功完成时，你将在屏幕上看到“Success”和一个绿色的对勾。
代币授权会持续一段时间，之后该代币将需要通过签名请求再次进行授权。授权签名不需要网络费用。
---
# Agent Instructions
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## 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://docs.pancakeswap.finance/chinese/huan-ying-lai-dao-pancakeswap/contact-us/faq/what-is-an-approval-transaction.md?ask=&goal=
```
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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.
