To perform optimum control on a drive device of a stepping motor, which drives the stepping motor, a lens barrel and an electronic camera in accordance with a temperature of a part to be driven.

The drive device of the stepping motor includes a motor driving means driving the stepping motor 21 with driving speed and driving voltage, which are set, a power supply means maintaining output voltage supplied to the motor driving means to voltage which is set, a temperature measuring means 25 measuring the temperature of the part to be driven and a control means controlling driving speed or driving voltage which is set in the stepping motor based on the temperature measured by the temperature measuring means.