The invention belongs to the field of polymer materials, and particularly relates to a polytetrafluoroethylene modified polyphenyl thioether material for an automobile plastic part. The material is prepared by the following raw materials in parts by weight: 100 parts of polyphenyl thioether, 12-15 parts of polytetrafluoroethylene, 4-5 parts of graphite, 3-5 parts of ammonium phosphate, 1-2 parts of resorcinol, 13-15 parts of iron tailing residues powder, 1-3 parts of accelerating agent MBTS, 9-12 parts of carbon black, 2-3 parts of zinc white, 1-2 parts of phenyl-hydroxide-4-mahogany acid, 2-3 parts of zinc stearate, 4-5 parts of glycerol cellulose triacetate, 3-4 parts of diethylene glycol benzoate, and 12-15 parts of an auxiliary. The polytetrafluoroethylene modified polyphenyl thioether material combines the advantages of the raw materials of the polyphenyl thioether, the polytetrafluoroethylene, and the like, and modifies the properties of conventional polyphenyl thioether materials; favorable processability and mechanical property are provided; the prepared material is high in intensity, chemical etching resisting, heat ageing resisting, flame-retardant, low temperature tendering resisting, and long in service life, and can be widely used for manufacturing various automobile-used plastic parts.