With the ordinary barrel structure, road cone is very easy to be knocked down by people and vehicles to roll on a road during use. So, design a structure principle for the road cone, including the center of gravity place and shape base edge, so that the road cone can steadily stand on the road. It can stand up rapidly by virtue of its own center of gravity and arch once it was knocked down.It is made of waste tire rubber powder. It is easy to made, integrated molding. It not only improves the safety in traffic but also is easy to be transported because of its hollow structure.