[Objective] A multiresidue analytical method was developed for determination of quintozene and chlorothalonil residues in fruit by gas chromatography/mass spectrometry(GC-MS).[Method] Samples were extracted and cleaned,then tested with internal standard method.The chromatographic conditions were optimized,then the selective ion scanning of mass spectrum detection(SIM) mode was used to detect.[Result]The recovery of two pesticides was ranged from 69.00% to 96.15% at fortification level of 0.10-2.00 μg/mL,the...