目的　通过减少体外授精后孕早期多胎妊娠的胚胎数目 ,改善妊娠结局和围产儿预后。方法　采用经阴道途径穿刺胚囊结合机械绞杀胚体的方法 ,对 5例 3～ 4胎 ,孕 7～ 9+ 5周的妊娠进行选择性减胎术。结果　术后 2例分娩正常双胎 (早产儿 ) ,其余 3例仍在妊娠中。结论　本文对手术方法和疗效进行讨论后认为该术式是孕早期减胎切实可行的方法。 Objective To reduce the number of embryos in multiple pregnancies during early pregnancy after in vitro fertilization and to improve pregnancy outcomes and perinatal outcomes. Methods 5 cases of pregnancy with 3 ~ 4 weeks, 7 ~ 9 weeks of pregnancy and 5 + 5 weeks of pregnancy were treated by selective transabdominal puncture and embryo sac combined with mechanical kills embryos. Results 2 cases of normal delivery of twins (premature children), the remaining 3 cases are still in pregnancy. Conclusion This article discusses the method of operation and efficacy after the operation that the surgery is feasible method of reducing pregnancy in early pregnancy.