Piston for car shock absorber

The utility model provides a piston for a car shock absorber. The piston comprises a piston body (1); a central through hole through which a piston rod passes is formed in the center of the piston body (1); an annular groove is arranged in the end surface of the piston body (1) and divides the end surface of the piston body (1) into an inner circular ring (1.1) and an outer circular ring (1.2); a plurality of inner ring throttling holes (2) and a plurality of outer ring throttling holes (3) are circumferentially uniformly distributed in the inner circular ring (1.1) and the outer circular ring (1.2), respectively; the outer ring throttling holes (3) are arc-shaped through holes; an oil guide groove (4) is axially formed in the outer circular ring (1.2) and communicated with the inner circular ring (1.1); the inner ring throttling holes (2) are formed in the part in which the oil guide groove (4) is connected with the inner circular ring (1.1); an opening (1.3) is formed in the circumferential wall of the piston body (1) through the oil guide groove (4).