A simple and sensitive method was developed for the determination of dinotefuran residues in brown rice,hull,straw and soil.The residues of dinotefuran in different matrix were extracted with acetonitrile.After cleaned with PSA column,the extract was separated on an Agilent ZORBAX SB-C18 analytical column,and determined by liquid chromatography-tandem mass spectrometry（LC-MS/MS） under multiple reaction monitoring（MRM） mode.The method was validated at different fortification levels in brown rice,hull,straw and soils.The recoveries for brown rice at three fortification levels ranged from 73.8% to 97.2% with relative standard deviations（RSDs） not more than 9.9%.The recoveries for hull were between 77.6% and 80.3% with RSDs not more than 5.8%.The recoveries for straw were between 76.0% and 94.0% with RSDs not more than 8.8%.The recoveries for soil were between 83.6% and 93.3% with RSDs not more than 6.4%.The results showed that the method is simple and rapid,and its sensitivity and accuracy could meet the requirements for pesticide residue analysis.