The ball lottery device is provided with a roulette part wherein a roulette plate and a retainer plate are superimposed and are capable of rotating as a unit; a slide motor unit that changes the position of the roulette plate relative to the retainer plate; and a host control device that selects either the ball-hold mode or ball-through mode for the roulette part. In the ball-hold mode, the host control device controls the slide motor unit so that the roulette part holds the balls and in the ball-through mode, controls the slide motor unit so that balls fall from the roulette part.
