A method of gas chromatography(GC) coupled with solid phase extraction was established for the simultaneous determination of 8 kinds of organophosphorus pesticide residues，including ethopropophos,sulfotep,terbufos,monocrotophos,parathion methyl,fenitrothion,isofenphos methyl and isocarbophos in xinhui dried orange peel and its products.The factors affecting extraction，purification and detection efficiency were optimized，and the optimal conditions were as follows：the samples were extracted with ethyl acetate，and purified on a homemade double solid phase extraction column packed with N-propylethylenediamine and multi-walled carbon nanotubes.The separation of target compounds were performed on a film thickness of Shimadzu Rtx-1701 capillary column(30 m×0.25 mm×0.25 μm)，and the quantitative analysis of organophosphorus pesticides was carried out by GC with flame photometric detector and the external standard method.Under the optimized conditions，the calibration curves of 8 organophosphorus pesticides were linear in the range of 0.020-1.0 μg/mL with correlation coefficients of 0.997 0-0.999 2．The detection limits(S/N=3)were in the range of 3.6-8.8 μg/kg．The recoveries of the pesticides in Xinhui dried orange peel and its products at three spiked levels ranged from 72.5%to 106%，with relative standard deviations of 2.8%-8.7%. With the advantages of accuracy,sensitivity，easy operation and rapidness,the method is applicable in the simultaneous determination of 8 kinds of organophosphorus pesticides in Xinhui dried orange peel and its products.The homemade column is worthy of popularization and application as it is inexpensive,and could largely reduce the detection cost.