The invention provides a noise reduction pieces for a plate spring and a plate spring, and relates to the technical field of plate springs. According to the noise reduction pieces for the plate spring, the noise reduction pieces is a double-layer structure which a rubber pad and a metal baseboard are fixed together, one face of the rubber pad is fixed on the metal baseboard, and the other face ofthe rubber pad is in contact with a reed; in a transverse impact and a longitudinal impact, only the metal baseboard is in contact with the through hole in the reed and is stressed, and the friction motion and the tearing motion of the contact surface of the rubber pad are reduced; and meanwhile, a convex block which protrudes outwards from the rubber pad is nested in a boss of the metal baseboard, the convex block is relative rest to the metal baseboard, so that the rubber pad is prevented from being punched and cut by a mounting hole to improve the shearing resistance of each direction of the rubber pad, and the service live of the noise reduction pieces and the service live of the plate spring are prolonged.