An improved suspending and stabilizing structure for a remote control car at least comprises a primary frame and two supporting arms moveably connected to two sides of the primary frame. The primary frame is provided with a holder on the bottom which can be provided with a cover at the front end. Besides, transmission shafts are connected to the primary frame for the installation of wheels. Corresponding holding holes and through holes are provided on the holder and the cover, respectively, while one end of the supporting arms may provided with a recession, on two sides of which are provided with corresponding holes. Threaded holes are provided at the outer sides of the holding holes and through holes, such that a front differential can be fastened thereto by way of screws, thereby the supporting arms can be lengthened to the greatest extent and that when the wheels run on rough roads, the oscillation range of the supporting arms can be reduced, thus enhancing the stability of the traveling vehicle.