The application of the invention discloses a compression type automobile exhaust purifier. According to the scheme, the compression type automobile exhaust purifier comprises a purifying chamber, wherein the left end of the purifying chamber is communicated with an air inlet pipe, the right end of the purifying chamber is provided with an end socket, a vent hole is formed in the end socket, a convex column towards to the outside of the purifying chamber is arranged in the middle of the end socket, a baffle is arranged on the convex column in a sleeved manner, a spring is connected between the convex column and the baffle, ceramic cellular boards are uniformly arranged in the purifying chamber, and a thermal insulating layer is arranged on the outer wall of the purifying chamber. The application of the invention aims at providing a compression type automobile exhaust purifier, so that by utilizing the characteristic that high speed and high pressure are required for exhaust discharge, the exhaust can be subjected to adiabatic compression in the purifying chamber, and the temperature of the exhaust can be increased.