The material background of Douyin’s unmanned music live broadcast room is as follows.

1. Douyin material library: Open Douyin APP, click "Me" in the menu bar at the bottom of the homepage, enter the personal homepage, click the "three dots" icon in the upper right corner, and select "Creation Center" option, and then select the "Music Library" or "Video Library" option to browse and download a variety of music and video materials.

2. Third-party material websites: Search for keywords such as Douyin music materials, Douyin live room background materials, etc. on the Internet. You can find many websites that provide free or paid material downloads, such as Material China, Qian. Picture network, etc.

3. Make it yourself: If you want more personalized live broadcast room background materials, you can make it yourself, such as shooting your favorite scenery, characters, etc., or use various picture and video editing software to create and edit.