Objective: To establish a method for determination of gallic acid in Geranium strictipe R.Kunth.Method: The chromatographic condition for gallic acid was that the Agilent ZORBAX SB C18(4.6mm×150mm,5μm)was used;the mobile phase consisted of CH3OH-H2O(0.4%H3PO4);the UV wavelength of gallic acid was 273nm;the flow rate was 1.0ml/min;the temperature of column was 25℃.Result: Gallic acid was good linearity over the range of 0.05~0.5μg,(r=0.999 9),The average recovery was 98.46%;RSD was 2.56%.Conclusion: The meth...