The material of the rolling cylinder is EVA and polyethylene blend, the color can be selected according to the requirements of yellow, orange, etc.. The color of the rolling cylinder is uniform, the edge is smooth, no burr, no flash, no peeling, no crack, no bubble, no trachoma and other defects, it is made from one modle, no obvious skew. When the rolling guardrail is hit by the  vehicle, the rolling cylinder can rotate under the impact force, driving trajectory of runaway vehicle from the vertical direction parallel to transform guardrail direction, thus resolve to reduce the severity of the accident of collision energy accident. At the same time, due to the excellent elasticity and the restoring force of the material of the rolling cylinder, the rolling guardrail can be avoided to be damaged during the collision process, and the utility model can effectively protect the runaway vehicles and passengers.