The invention provides an automobile exhaust utilization device. Air exhaust pipes comprise a front air exhaust pipe and a rear air exhaust pipe; a wind power device is arranged between the front airexhaust pipe and the rear air exhaust pipe, and comprises an outer shell and an inner shell; a cavity is formed between the outer shell and the inner shell, and communicates with a circulation waterway; a thermoelectric power generation piece is pasted on the outer side of the inner shell; fan blades and a microgenerator are arranged in the inner shell; the circulation waterway is further arrangedon the outer shell; an air flow enters the inner shell from the front air exhaust pipe so as to push the fan blades to rotate; and the fan blades drive the generator to generate power. The automobileexhaust utilization device provided by the invention has the beneficial effects that the wind power device is arranged on the air exhaust pipes and is used for generating power through the thermoelectric power generation piece and the micro wind driven generator, so that not only is the kinetic energy of exhaust utilized, but also the heat energy of the exhaust is effectively utilized; and the diameter of the power wind device is larger than the diameter of each air exhaust pipe, and the exhaust can release a large number of heat energy and kinetic energy in the wind power device, so that theexhausted heat is greatly reduced.