目的:观察重度子痫前期(EOSP)期待疗法的临床效果,探讨不同孕周可行性。方法:对孕25～27+6周26例(甲组)、孕28～31+6周44例(乙组)、孕32～33+6周32例(丙组)EOSP孕妇实施期待疗法,包括基础治疗、促进胎儿成熟、密切监护及适时终止妊娠。结果:3组延长孕周时间有差异,乙组最长;孕妇并发症发生率甲组最高,乙、丙组比较差异无统计学意义;甲组新生儿预后最差,乙、丙组新生儿比较差异无统计学意义。结论:<31孕周的EOSP孕妇不宜继续妊娠,孕32～33+6周孕妇应及时终止妊娠,孕31～31+6周孕妇可以实施期待治疗。 Objective: To observe the clinical effect of expectant treatment of severe preeclampsia (EOSP) and explore the feasibility of different gestational weeks. Methods: Twenty-four pregnant women (group B) with gestational age 25-27 + 6 weeks, 44 patients with gestational age 28-31 + 6 weeks (group B) and 32 (group C) pregnant women with period 32-33 + 6 were enrolled in this study. Including basic treatment to promote fetal maturity, close monitoring and timely termination of pregnancy. Results: There was a difference in prolongation of gestational age among the three groups, with the longest in group B; the incidence of complications in pregnant women was the highest, the difference between groups B and C was not statistically significant; the prognosis of neonates in group A was the worst, The difference was not statistically significant. Conclusion: Pregnant women with EOSP in gestational age <31 should not continue with pregnancy. Pregnant women with gestational age 32-33 + 6 weeks should terminate their pregnancy in time and pregnant women with expectoration of 31-31 + 6 weeks can expect to be treated.