> For the complete documentation index, see [llms.txt](https://docs.parallels.cn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.cn/pdfm-19-ug-zh_cn/parallels-desktop-for-mac-19-users-guide/an-zhuang-huo-sheng-ji-parallels-desktop/gou-mai-parallels-desktop.md).

# 购买 Parallels Desktop

如果您正使用 Parallels Desktop 试用版本，可以直接从应用程序界面购买正式版本。要实现此目的：

1. 单击**关于 Parallels Desktop** 窗口中或促销中的**购买**。
2. 请选择下面一个选项：
   * **升级：**选择该选项可以升级 Parallels Desktop 当前版本。但是请记住您将需要旧版本的激活密钥。如果默认选择了**升级**选项，那么 Parallels Desktop 就已经自动检测到了旧版本的密钥。如果没有默认选定，请确定持有旧版本的密钥。
   * **购买完整版本：**选择此选项可以购买 Parallels Desktop（如果之前从未使用过的话）。
3. 请根据屏幕上的说明进行操作。您可能需要向下滚动查看所有信息。


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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

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