A new analytical method was developed for the determination of 167 pesticides in animal-originated foods,including meat and aquatic.The pesticide residues were extracted from animal-originated samples with acetonitrile,and purified by gel permeation chromatography and solid-phase extraction（Carb-NH2）.The detection could be achieved by gas chromatography-tandem mass spectrometry（GC-MS/MS）,and the quantification was performed using the external standard calibration.The experimental results showed that the linear ranges for 167 pesticides were in the range of 1-200 μg/L with correlation coefficients larger than 0.994.The limits of detection and quantitation for 167 pesticides in the spiked blank pork sample were in the ranges of 0.3-3 μg/kg and 1-10 μg/kg,respectively．The spiked recoveries at levels of 0.01 mg/kg and 0.04 mg/kg using pork samples as blank matrix were in the range of 66.4%-111.5%,and the relative standard deviations（RSDs） were 1.3%-17.8%.The method has the advantages of accuracy,reliability,high sensitivity and efficient cleanup procedure,and could meet the demand for pesticide routine analysis.