The invention belongs to the technical field of auto parts and discloses an automotive air purifier. The automotive air purifier comprises a shell and an infrared remote controller, wherein an air inlet is formed in the top of the shell, an air outlet is formed in the lower end of one side of the shell, a micro fan is arranged inside the shell, and a filter net is arranged at the upper end of the micro fan. By arranging the filter net, air in an automobile is processed into anions beneficial to people, and purification effect is good; by arranging a microprocessor, an infrared receiver and the infrared remote controller, one-key remote control is realized, and using is convenient; by arranging an air quality sensor, the quality of air in the automobile is monitored, filter net replacement is instructed, and practicality is high; a luminous coating is arranged to glimmer, so that consumption experience is improved; by arranging a power bank circuit board and a storage battery, more functions are realized, and the requirement for a portable power source is met; the whole purifier is high in functionality, simple in structure and suitable for application and popularization.