To provide a power feed system for an industrial robot with less radiation of electro-magnetic wave and sufficient cooling of an electronic part by shortening the wiring of a power cable.

The robot device includes the industrial robot provided with a plurality of driving means (1) for driving an operation mechanism of a robot; and a control device for controlling and driving a driving means of the industrial robot. An electric driving motor (2) and a deceleration device (3) exist in each driving means (1). Each control device includes a rectifier (6) and a driving device (7) provided for each driving motor (2) and at least one driving device (7) related to the driving means (1) is arranged on the robot adjacent to the driving means.