1. Open the Tik Tok application, enter the personal homepage, and click the "Me" option in the upper right corner to enter the personal profile page.

2. On the profile page, you will see an icon like a pen. Click it to start editing your profile. Click "Name" or "Nickname" and enter the content to be modified in the pop-up box.

3. After entering, click the "Save" button in the upper right corner, and the name and nickname will be updated successfully.