The present invention relates to a finger musical instrument, including a first glove and a second glove, some performance keys distributed on a fingertip of each of the gloves, and a sound box positioned at each of the gloves. The finger musical instrument further includes a combination key positioned at palm heel of each of the gloves. Each of the sound boxes is connected with a controller. The performance key and the combination key on the same glove are all connected with the corresponding controller. Therein the performance key and the combination of the performance key and the combination key of one glove gives out one octave sound, while the performance key and the combination of the performance key and the combination key of the other glove gives out another octave sound. Each of the controllers is provided with a range regulation switch used for making a sound higher or lower by an octave on each of the gloves. With regulation of the range regulation switch, the finger musical instrument is able to give out a range of two octaves through the sound box. The finger musical instrument of the present invention covers a range of three octaves and can exhibit a vivider music, and the controller can switch between a performance mode and a teaching mode, thus enhancing interaction between the finger musical instrument and a performer.