A analytical method was developed to determine bisphenol A(BPA), bisphenol F(BPF)and their chlorinated products in drinking water using ultra-performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS).Methods Water samples were concentrated and purified with PLEXA solid-phase extraction catridges. The target analytes were separated on a BEH C₁₈ column(2.1 mm×100 mm,1.7 μm)with gradient elution using acetonitrile and water, and identified under negative electrospray ionization. The matrix-matched standard calibration curves were used for the quantitative analysis. Results Good linearities were achieved for all analytes with correlation coefficient (r²) above 0.99. The quantitation limits of the method (LOQ) were in the ranges of 0.01-4.00 ng/L. The recoveries of the target analytes ranged from 78.8%-99.6%, with relative standard deviations (RSD) less than 12.2%. Forty drinking water samples were analyzed by the developed method, and the detection rate of BPA, BPF and 4Cl-BPA were 45.0%(18/40),40.0%(16/40)and 32.5%(13/40), the concentrations were 0.60-9.40 ng/L, ＜LOQ-106.20 ng/L and