To scan the QR code and add a WeChat group, you need to scan the homepage of the mobile phone WeChat APP. Scan the QR code and add a WeChat group. The specific operation steps are as follows:

1. First, click the+icon at the top of the mobile phone WeChat APP operation main page.

2. Next, click Scan to pop up the operation page below.

3. Finally, you need this page to scan the QR code of the WeChat group in order to successfully apply to join the WeChat group.