Tuba is the basis of bass in the band. In a band, tuba is magnificent and powerful, and is often the undertaker of bass rhythm, and sometimes plays some bass melodies, but this requires tuba players to have high musical literacy and the ability to control the trumpet. Compared with other wind instruments, tuba playing is generally simple, but it is very difficult to practice well. Tuba is very gas-consuming, and the basic playing method is just to practice a single spit. It requires the center point of the large mouth to be consistent with the center point of the lips, to be tight when practicing, to relax the muscles of the lips, to have a stable breath, and to staccato clearly, accurately and flexibly. A large alto (C-F) can play a smooth melody, so we should pay attention to fully and coherently mastering the breath when practicing, and the speed should not be too fast.