A medical manipulator system includes a manipulator, an operating unit for entering operation commands, motors for actuating a working unit, and a controller for energizing the motors based on operation commands supplied from the operating unit. When an activation resetting switch and a resetting switch are operated according to a predetermined procedure, the controller performs a resetting process to return the motors to an origin. The controller is capable of controlling three manipulators. The activation resetting switch is shared by the three manipulators, and there are three resetting switches corresponding to the three manipulators.