Abstract: Disclosed is a ball launcher and an amusement machine using the ball launcher. The ball launcher includes: a controller that produces compressed air when the controller is hit; a cylinder that is disposed under the ball seat member and has a piston that is moved up/down by compressed air; a duct member that is connected to the lower portion of the ball seat member to send the compressed air produced by the controller to the cylinder; a rotary disc assembly that is disposed over the ball seat member, has two or more through-holes in which balls are seated, and is rotated by a motor to sequentially seat balls on the ball seat member; and a ball sensor that selectively operates the motor by determining whether there is a ball on the ball seat member. The ball launcher launches balls by controlling an external controller and easily collects the balls, so the ball launching function can be quickly controlled.