全球死胎发生率差异较大的原因与死胎定义不一以及各地社会发展不均衡相关；以往研究发现，＜28周的死胎多与胎儿畸形、妊娠合并症相关；≥28周的死胎多与妊娠并发症有关，尤其胎儿生长受限；分娩过程的死胎，主要与临床监护、处置不当有关。针对不同死胎原因的管理，有望降低死胎发生率。

Due to the different definition of stillbirth and the inconsistency of social development around the world，the incidence of stillbirths varies greatly.The available data confirm that although the causes of stillbirth are complicated，＜28 weeks of stillbirths are more likely to be related to fetal malformations and pregnancy complications；≥28 weeks of stillbirths are more likely to be related to pregnancy complications，especially FGR；stillbirth during delivery is mainly related to clinical monitoring and improper treatment.To strengthen screening and comprehensive management of high-risk patients with stillbirth is expected to reduce the incidence of stillbirth.