The user name is the account name, which cannot be changed once it is set, but the nickname can be changed. The operation method is as follows:
1. Open the mobile phone, find "Iqiyi App" and click to enter.
2. Go to the iQiyi homepage, click "My", and then click "Click to set a nickname".
3. Go to the edit data page and find the "Nickname" option.
4. Enter your favorite nickname, and then click "Save".
5. Return to the My interface, and you can see that the nickname has been set.