1. First, open the main page of mobile phone, find QQ music, and click to enter the main page of QQ music;
2. after entering the main page of QQ music, click the "three" button in the upper left corner, as shown in the figure below;
3. After entering the page, find the personalized dress, and click to enter the personalized dress page;
4. After entering the personalized dress-up page, find the personalized skin and click Enter;
5. after entering the personalized skin page, click free first, and then click custom skin in the page;
6. After entering the custom skin page, click the+sign in the middle, as shown in the figure below;
7. after selecting a good picture, click the confirm button in the lower right corner, as shown in the figure below;
8. After the page pops up, click the Finish button in the upper right corner.
9. thus, the custom background of mobile qq music is set.