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目的:探讨妊娠34周后凶险性前置胎盘终止妊娠时机对手术安全性及母儿结局的影响。方法:选择2018年3月至2019年3月在青岛大学附属医院崂山院区住院的凶险性前置胎盘患者84例，入院分娩妊娠时间均超过34周，妊娠34 ~ 36周的40例产妇作为研究组，超过36周的44例产妇作为对照组，比较两组产妇及胎儿的妊娠结局。结果:研究组产后出血量以及介入手术率低于对照组[（754.58 ± 20.35）ml比（1 449.26 ± 512.32）ml、17.5%（7/40）比52.27% （23/44）]（n P0.05）。研究组新生儿出生体质量低于2 500 g率以及转入新生儿科率高于对照组[75.0%（30/40）比11.36%（5/44）、80.0%（32/40）比11.36%（5/44）]（n P0.05）。n 结论:在妊娠36周之前对凶险性前置胎盘产妇进行终止妊娠对于产妇以及胎儿的健康更有保障，如胎儿发育速度较慢，则需要适当根据产妇以及胎儿的实际情况适当将分娩时间延长，但是切不可超过36周。“,”Objective:To explore the effect of different pregnancy termination timings on the delivery safety of maternal women with pernicious placenta previa after 34 weeks.Methods:A total of 84 patients with pernicious placenta previa in Laoshan Campus of the Affiliated Hospital of Qingdao University from March 2018 to March 2019 were selected. The time of admission for delivery was more than 34 weeks. Forty women who pregnant from 34 weeks to 36 weeks of pregnancy was in the study group, 44 women who pregnant over 36 weeks was in the control group, and the pregnancy outcomes of the maternal fetuses of the two groups were compared.Results:The postpartum hemorrhage and the incidence of interventional surgery in the study group were less than those in the control group: (754.58 ± 20.35) ml vs. (1 449.26 ± 512.32) ml, 17.5%(7/40) vs. 52.27%(23/44), the differences were statistically significant (n P0.05). The incidence of neonatal birth weight less than 2 500 g and the proportion of transfer to neonatology in the study group were higher than those in the control group: 75.0%(30/40) vs. 11.36%(5/44), 80.0%(32/40) vs. 11.36%(5/44), the differences were statistically significant (n P0.05).n Conclusions:When the pernicious placenta previa is delivered after 34 weeks, the termination of pregnancy before 36 weeks of gestation is more secure for maternal and fetal health. If the fetal development rate is slow, it is necessary to appropriately extend the delivery time, but don′t exceed 36 weeks.