Objective:To establish a method for the determination of the content of three active constituents ginsenoside Rb1,Re,Rg1 in Tiepi Fengdou Jiaonang.Method:A diamonsil C_(18)column(150mm×4.6mm,Sum)was used with the mobile phase of CH_3CN~0.2% H_3PO_4 ,the detection wavelength of 203 nm ,and the flow rate of 1.0 ml/min.The column temperature was 35℃.Results:The detection ranges of ginsenoside Rbl were 0.32mg/ml~2.00mg/ml(γ=1)and ginsenoside Re were 0.16mg/ml~1.00mg/ml(γ=0.9999)and ginsenoside Rgl were 0.024mg/...