Abstract: There were two experiments in this study . In trialⅠ,average 17.07 available embryos were collected from 12 Boer goats treated for super-ovulation at the beginning of reproductive season. After two months all of them were divided into two groups for repeated super-ovulation. The dose of FSH was not changed and 12.93 available embryos were collected from each donor(14 available donors)in group A. But the dose of FSH for group B was increased by 30% and average 15.46 effective embryos were collected from group B(13 available donors) . There were still two donors from group A and group B separately that could not give us any chance to collect ova because of adhesion of reproductive organs. In trial Ⅱ, 12 Boer goats which gave us more effective embryos in 2000 were chosen for the second and third time repeated super-ovulation in the autumn of 2001 and 2002. Average 15.50 available embryos were gathered from the 12 goats in the second year. It was same as what in the first year. Average 13.40 embryos were gathered from the 10 donors and another two goats had not been used due to adhesion of reproductive organs in the third year.