The invention relates to a shockproof anti-jolt chassis of a passenger car. The shockproof anti-jolt chassis comprises a car frame, a central axle, a central spring, a wheel bow frame, a front wheel axle, a rear wheel axle and a central socket sleeve, wherein the front wheel axle is arranged at the front end of the wheel bow frame, and the rear wheel axle is arranged at the rear end of the wheel bow frame. The central axle is fixed in the middle of the car frame and is connected with the wheel bow frame on two edges of the car frame; the wheel bow frame is downwardly bow-shaped, the lower middle part of the wheel bow frame is fixedly connected with the central socket sleeve; a transverse middle hole groove is formed in the middle of the central socket sleeve, the central axle penetrates through the upper part of the middle hole groove, the central spring is mounted in the middle hole groove, and the central axle is supported by the upper end of the central spring; and the wheel bow frame, the central socket sleeve, the central axle and the central spring constitute the shockproof anti-jolt mechanism of the passenger car. In the invention, with the integrated structure of the wheelbow frame, the central axle, a front axle spring and a rear axle spring in the entire passenger car, the traditional separately-arranged structure of the front and the rear wheel sets is changed, therefore shockproof and anti-jolt effects of the passenger car are greatly improved. The shockproof anti-jolt chassis provided by the invention has the advantages of firm structure, simple components, good shockproof effect and especially obvious anti-jolt effect.