Objective To improve the quality standard of Niaoshitong Pills.Methods An Agilent TC C18 column was used, with mobile phase of methanol- water (37:63). The flow rate was 1.0 mL/min and the detective wavelength was 272 nm. Schaftoside inDesmodii styracifolii herba and hesperidin inAurantii fructus immaturus were simultaneously determined.Results The linear range of schaftoside was 0.1637-1.800μg,r=0.9994, the average recovery was 98.9 %, withRSD of 1.0 %. The linear range of hesperidin was 0.1526-1.679μg, r=0.9991, the average recovery was 98....