1. Open the "Tik Tok" software on your mobile phone and click the "Me" button in the lower right corner.

2. click the icon button in the upper right corner, as shown in the figure below.

3 click "settings" to enter, as shown in the figure below.

4. click "account and security", as shown in the figure below.

5. click "real name authentication" to authenticate Tik Tok, as shown in the following figure.