To establish a dissolution method for Azilsartan Tablets.Dissolution medium is PH6.8 pHospHate buffer 900mL, speed is 50r/min, sampling time is 45 min and by UV-Visible spectropHotometry detecting and detection wavelength is 245nm.Azilsartan within 1.0356∼11.3913μg/mL Concentration range (r=0.9997) showed a good linear relationship, and the average Recovery rate was 99.3%, RSD was 1.0%.The method is simple, accurate and reliable, which can be used for detecting the dissolution of Azilsartan Tablets.