A high performance liquid chromatography-tandem mass spectrometric method(HPLC-MS/MS) was developed for the simultaneous determination of hexabromocyclododecanes(HBCDs) and tetrabromobisphenol A(TBBPA) in farmland soils.Samples were extracted by accelerated solvent extraction(ASE) and purified with Sep-pak C18 solid phase extraction(SPE) cartridges.The targeted compounds were separated on an X Bridge C18(150 mm × 2.1 mm × 3.5 μm) using methanol-water as mobile phases,and then analyzed by HPLC-MS/MS in multiple reaction monitoring(MRM) mode with negtive electrospray ionization.The target compounds had good linear relationships(r≥ 0.998) in the range of 0.50-200.0 μg/L.The limits of detection(S/N ≥ 3) were in the range of 1.80-10.0 ng/kg,and the average recoveries at spiked levels of 1.0- 40.0 μg/kg ranged from 73.8% to 106.9%with RSDs of 5.8%-11.2%.The method was successfully applied in the detection of HBCDs and TBBPA residues in practical farmland soils.