Abstract: This invention divides into blocks element parts of a running toy of radio control system so as to make easy repairing or setting up. The running toy is composed of a drive unit part of rear wheels, an electronic component unit part for running control, a steering unit part of front wheels, a battery housing unit part, a chassis for supporting said unit parts, and a body of the running toy. The unit parts are divided into blocks, and the body is provided with socket parts in correspondence to disposing positions of said block parts, and the sockets parts are connected electrically and connected to said block parts detachably.