Abstract: Objective In oroler to deeply acquaint gasoline exhausted particles components.Methods The contents of six polycyclic aromatic hydrocarbons(PAHS)in organic extracts were determined by the high performace liquid chromatography and the contents of five metals in non-organic extract were determined by the atomic absorption spectrophotomotry.Results The Sequence of six PAHS was following the order from high to low: B(a)P >PHE >COR >B(a)A >CHR+P YR.The percentage of B(a)P was 40 percent.The sequence of five metals was following the order from high to low:Pb >Ni >Cr >Cd >Mn.The percentage of Pb was 37 percent.Conclusion B(a)P and Pb were mainly components in gasoline exhaust particles.