An optical disk apparatus of low consumption of electric power, wherein heat generation is suppressed within a stepping motor for use of drive of a pickup, as one of the heat generation sources, comprises: a pickup 3 for irradiating a laser light upon an optical disk by means of a laser diode; a disk motor for rotating the optical disk mounted thereon; a stepping motor 5 for moving the pickup in the disk radial direction; and a system controller 6 for controlling driving current of the laser diode and rotation speed of the disk motor, as well as, conducting the position control on the pickup through the stepping motor, wherein the stepping motor has a temperature sensor 31 within an inside thereof, and the current to be supplied to the stepping motor is set to be within a predetermined range, so as to control the rotation speed thereof, so that the temperature within an inside is suppressed from increasing, depending upon the temperature detected.