To establish a method for the determination of the contents of 4 Ginsenosides in granules of ginseng and sanchi.Methods:The determination was carried out with Waters Nova-Pak C18 column (150×3.9mm 4mm）, using acetonitrile -water as the mobile phase (gradient elution) at a flow rate of 1 ml/min and detected at the wavelength 203 nm.Results:The calibration curves of Notoginsenoside R1, Ginsenoside Rg1, Ginsenoside Re, Ginsenoside Rb1 were in good linearity over the range of 0.210-1.890μg, 0.822-7.398μg, 0.203-1.827μg and 11.22-10.98μg, with r=0.9998, 0.9999, 0.9996 and 0.9999, respectively. The average recoveries for Notoginsenoside R1, Ginsenoside Rg1, Ginsenoside Re, Ginsenoside Rb1 were 101.7 with RSD (n=5) 2.3%, 97.4 with RSD (n=5) 1.3%, 98.9 with RSD (n=5) 1.6%, and 100.4 with RSD (n=5) 0.9%, respectively.Conclusion:The method is simple, sensitive, accurate and reproducible, and can be used to control the qualities of granules of ginseng and sanchi.