【Objective】This study investigated the anti-fertility effect of Albiziasaponin on Ochotona curzoniae and determined the optimal dose to improve the control of O.curzoniae.【Method】Saponin solution fromAlbizia was fed to mice with the doses of 135,270 and 540mg/kg to test the anti-fertility effects on mice.The optimal dose was determined and conversed to corresponding dose for O.curzoniae.Granules with mass fractions of 0.3%,0.6% and 1.2% were prepared and feeding coefficient study was conducted to select the...