目的:探讨辅助生殖技术(ART)能够降低异位妊娠风险的预防、治疗措施。方法:报道2例国内外少见的不同步异位妊娠病例,并结合近年来相关的5个案例进行回顾性分析。结果:不同步异位妊娠成因复杂,自然受孕及ART助孕都可发生,最迟可发生在初次异位妊娠后1个月左右,且往往需要2次手术治疗。结论:对有相应适应证的患者,输卵管抽芯切除作为预处理或冻融单囊胚移植可降低不同步异位妊娠的发生率;异位妊娠手术处理后1个月左右均需密切监测患者情况,尽早发现不同步异位妊娠病灶并给予及时处理。 Objective: To investigate the preventive and therapeutic measures of assisted reproductive technology (ART) to reduce the risk of ectopic pregnancy. Methods: Two cases of asymptomatic ectopic pregnancy rare at home and abroad were reported and retrospectively analyzed in combination with 5 cases in recent years. Results: Asynchronous ectopic pregnancy complicated by complex causes, natural pregnancy and ART can help pregnancy, the latest may occur in about 1 month after the first ectopic pregnancy, and often require 2 surgical treatment. Conclusions: Tubal resection as a pretreatment or frozen-thawed single blastocyst transfer can reduce the incidence of asynchronous ectopic pregnancy in patients with corresponding indications. Close monitoring of patients about 1 month after ectopic pregnancy is required Situation, early detection of asymptomatic ectopic pregnancy lesions and give timely treatment.