To establish a method for determining the content of danshensu in Danqi tablet by HPLC.Diamonsil ODS1 C18 column was used with methanol-water-glacial acetic acid (8:91:1) as mobile phase, detection wavelength at 281 nm and flow rate at 1.0 mL/min.The calibration curve was linear in the range of 0.0747-0.224 mg/mL for the danshensu, and linear equation was Y = 7033980.19X -34659.73 with r = 0.9999.The average recovery was 99.4%, and the related standard deviation (RSD) was 1.5% (n = 6).This method was simple, accurate, and proper, which can be provided for scientific quant. anal. method of danshensu in Danqi tablet, and the reduplication of the result was good.