The invention relates to the structure and shape of a universal wheel, disclosing a new universal wheel, composed of big and small waist drum rollers, batwing bracket, long and short mandrels, side cover plate, bearing, sleeve, central shaft, wheel frame and so on. Its character: the two rollers and the two mandrels fixed on the batwing bracket compose the wheel edge, the batwing bracket is linked with the side cover plate, and the bearing, the central shaft and the wheel frame are installed in the center of the side cover plate, thus composing it. It uses the two rollers to compose double-freedom mechanism, thus able to be pushed in an arbitrary direction to move without rotating the direction of the wheel when used, saving the rotary space. In addition, it has not only better stopping property to prevent the sand from intruding into the inner cavity of the rollers, but also has advantages of reasonable structure, good technique, etc.