Abstract:Objective:To establish a method for the determination of triptophenolide in Chinese herb Leigongteng(Tripterygium wilfordii Hook.f.).Method:TLCS was used.The sample was purified with a column and developed upwardly with CHCl 3 EtOEt(2∶1),sprayed with Keddle testing solution and scanned.The content was calculated with external two point method.Result:The linear range was 2.1μg~10.5μg,r=0.998.Conclusion:The method is proper for the quality control of Leigongteng.