Abstract: The control effects of Milestone on Oxytropis ochrocephala Bunge were tested. The results showed that obvious control effects were obtained in two treatments of Milestone on O. ochrocephala after pesticide application 30 and 60 days and the efficacy were both more than 70%. The efficacy on O. ochrocephala with 500 mL/hm2 Milestone was over 80%. Two concentrations of Milestone was safe to pasture, so they could be used and popularized as effective control pesticide to O. ochrocephala.