1. Open Tik Tok and find me in the lower right corner. Click to enter my settings.

2. See the background picture in Tik Tok's personal center, and click this background picture to set it.

3. Click the picture that pops up the background picture, and then there is a button below to change the background picture. Find and select in the gallery of the new pop-up box, or select the image source to upload from the album.