The utility model relates to the technical field of floor springs, in particular to a novel floor spring. According to the novel floor spring, a piston channel is formed in a case, a first buffer piston and a second buffer piston are arranged on the two sides of a camshaft respectively, and a first end cover and a second end cover for sealing the two pistons respectively are arranged in the piston channel. A first spring and a first single flow direction valve are arranged in the first buffer piston, a second spring and a second single flow direction valve are arranged in the second buffer piston, the piston channel is separated into a first oil cavity, a second oil cavity and a third oil cavity by the two buffer pistons, and a backflow oil path is connected between the first oil cavity and the third oil cavity through regulating valves. The situation that when door closing speed is too high, a machine body and a door leaf are damaged is avoided under the protection action of the buffer function achieved through interaction of the eccentric camshaft, the two buffer pistons and hydraulic oil, the function of the floor spring is more stable, the floor spring is simple in structure, production efficiency is improved, the floor spring is prevented from being buried underground, and the door leaf can be mounted conveniently.