The pretreatment was carried on a neutral alumina, eluted with Et acetate-acetone (3:1).The gradient elution was used with a flow rate of 1.0 mL/min-1 and UV detection at 218 nm.The column temperature was 15°.The column was Phenomenex C18 column (250 mm × 4.6 mm, 5 μm) purchased from Guangzhou FLM Scientific Instrument Co. Ltd.Mobile phase A: 0.05 mol/L-1 sodium dihydrogen phosphate (adjusted to pH 4.0 with phosphoric acid)-acetonitrile-methanol (60:15:25); Mobile phase B: methanol.Condition of the gradient elution: 0-18 min, A (100%); 18-25 min, B (100%); 25-30 min, A (100%).Triptolide was well separatedThe linear calibration curve was obtained in the concentration range of 0.44-14.16 μg/mL-1 (r = 0.9999).The average recoveries of triptolide at low, medium and high concentrations were 95.4%, 95.9%, and 96.6% resp.The method was simple, accurate, and reproducible.It was proposed to be used for the quality control of Tripterygium wilfordii polyglycosides.