Abstract:Objective: To esdevelop a HPLC method for determination of triptolide in tripterygium total terpenoids tablets. Method:A Lichrospher CN column was used with wethanol and water for gradient elution. The detection wavelength was set at 255 nm. Result: The linear relationship of the concentrations and peak areas was good in range of 0.742-59.4 μg·mL-1 (r=0.999 8). The average recovery was 99.2%, RSD%=1.7%. Conclusion: The method is simple, rapid and accurate and can be used for quality control of the tablets.