Abstract:This study pay attention to the pretreatment methods of imported plant oils，comparing improved method of liquid-liquid traditional extraction combined with QuEChERS method，solid-phase extraction method to optimize GPC purification method，it showed that the QuEChERS method was more acceptable，assisted by the cold defatted method which can effectively solves of the problem of oil interference on determination of pesticide residues，by analyzing three addition levels of six parallel samples of plant oil，the linear range was：0.02 mg/L-1.0 mg/L.The range of nine oil pesticide LOD and LOQ was 0.01 μg/kg-0.65 μg/kg，0.04 μg/kg-2.16 μg/kg respectively，thus detection requirement was satisfied by related indexes of this method，suitable for rapid detection of imported oil.