随着中国老龄化的进展以及“三孩政策”的开放，可以预测高龄妊娠将会增加，辅助生殖技术应用和妊娠合并症及并发症也将相应增加，死胎原因构成比可能会随之改变。重视死胎病因分析及筛查，加强围产期孕产妇监护，对降低死胎率、保障母婴安全具有十分重要的意义。

With the progress of China's aging population and the opening of the "three-child policy"，it can be predicted that there will be an increase in advanced pregnancy，assisted reproduction and complications of pregnancy.The ratio of causes of stillbirth may change.It is of great significance to pay attention to the etiology analysis and screening of stillbirth and strengthen perinatal and maternal monitoring in order to reduce the stillbirth rate and ensure the safety of mothers and infants.