Abstract:A dispersive liquid liquid microextraction（DLLME）and gas chromatographic（GC）method for the determination of p-hydroxy benzoates and its salts in complex food matrix was established.Sample was soaked in water，using boiling and ultrasound two steps to extract the target material.Take 4 mL sample solution，after adjusting pH，0.6 g sodium chloride，0.3 mL carbon tetrachloride and 0.6 mL acetone were added.Using manualandvortexextraction，aftercentrifugation，the organic phase was analyzed.The linearity was good in 25 mg/kg-1 000 mg/kg using this method，r2was 0.997 2-0.999 0，the recovery rate was 95.6%-99.2%，the relative standard deviation was less than 4.0.The lower limit of quantification for methyl，ethyl，propyl，butyl paraben was 1.2 mg/kg-3.2 mg/kg.