Gas chromatography (with a FPD detector) was applied to the quick determination of 13 organophosphorus pesticides residues in green tea with sample pretreatment by ultrasonic assisted extraction and dispersive solid phase extraction. The sample (5 g) was extracted with 20 mL acetonitrile(containing 1% acetic acid) by ultrasonic, and the extract was purified by dispersive solid-phase extraction with graphitized carbon/primary secondary amine (GCB/PSA). After the high speed centrifugation, nitrogen flushing concentration, and filtration, the sample was detected by GC-FPD. At the fortification level from 0.02-0.10mg/kg, the average recovery of 13 organophosphorus pesticides was 84.78%-116.72%. Meanwhile, the relative standard deviation (n=3) was from 0.12%-9.32% and the limits of detection was 0.0008-0.01mg/kg. The method was simple, rapid, accurate, and low-cost with few impurity disturbs and suitable for organophosphorus pesticides detection in green tea. This method was applied for the detection green teas in local markets, and the results of all organophosphorus pesticides were under the maximum residue limits of GB 2763—2012.