The invention discloses a sound equipment shell paint spraying device. The sound equipment shell paint spraying device comprises a hollow box; the box is provided with an opening; a sealing plate is hinged to the opening; the bottom of the box is rotationally connected with a disc; multiple limiting mechanisms, swing mechanisms and recovery mechanisms are arranged in the peripheral direction of the disc at equal intervals; each limiting groove is slidingly connected with a limiting block; first springs are arranged between the limiting blocks and the limiting grooves; airbags are arranged among the limiting blocks; multiple support arms are fixedly connected to the inner walls of the airbags; guide blocks are arranged on the side walls of the box, and are slidingly connected with frictionarms; reset springs are arranged between the friction arms and the guide blocks; side arms are arranged on the friction arms; the box is provided with an intermittent mechanism for extruding the friction arms; and spraying guns are arranged on the side walls of the box. The sound equipment shell paint spraying device mainly solves the problem of nonuniform painting in traditional sound equipment shells.