The utility model provides an automobile emission purification device, including insulating housing (1), be located the casing inlayer insulating medium (2), install whole external power supply (3) and set up plasma reaction zone (9) in the insulating housing (1) in the middle part of, insulating housing (1) be the hollow cavity of column, include in proper order in the cavity that tail gas gets into district (6), electrostatic absorption district (7), no. 1 buffers (8), plasma reaction zone (9), no. 2 buffers (11) and exhaust emissions and distinguishes (12), plasma reaction zone (9) including the equal ionic reaction ware of two series connection, when the ionic reaction ware include hollow tubulose dielectric put magnetron (19) and the winding putting magnetron (19) the outside spiral electrode. The utility model has the advantages of simple structure and reasonable design, automotive exhaust purifying is rateed highly, and application scope is wide, and the practicality is strong.