A method for determination of paeoniflorin content in Jingzhi Guanxin tablets was established using high performance liquid chromatog. (HPLC) on Kromasil C18 column with acetonitrile-0.2% phosphoric acid solution (13:87, pH 3.1-3.3 adjusted by triethylamine) as mobile phase, detection wavelength of 230 nm, injection volume of 10 μL and flow rate of 1 mL/min.The calibration curve was linear in the range of 0.317-1.587 μg with correlation coefficient of 0.9999.The average recovery was 100.1% with relative standard deviation (RSD) of 1.46%.The method is highly specific, reproducible and can be used in the quality control of Jingzhi Guanxin tablets.