Abstract: Abstract：In this study, the pesticide residues of chlorothalonil, cypermethrin and fenvalerate of Dongzao were determined by improved gas chromatography with electron capture detection (GC-ECD) 30 days before harvest. The result showed that the concentration of these three pesticides had significant difference and great significant difference on the pesticide residues with the order of high concentration﹥low concentration﹥CK. The residues of these three pesticides were observed to have been reducing with the harvest time, but with different variation in reduction. Of all measures taken for the lavation, we found it was better to eliminate chlorothalonil and fenvalerate with lotion, but for the elimination of cypermethrin there would be better effect with water. These result could provide some reference for the organic fruit production of Dongzao.