目的:探讨妊娠晚期突发胎死宫内原因,降低围生儿死亡率。方法:回顾性分析2006年1月～2011年9月该区行死胎引产的妊娠晚期突发胎死宫内359例患者资料,将围生儿死亡分为3种:①不可避免死亡;②创造条件可以避免死亡;③可以避免死亡。所有病例均参加了区级围生儿死亡评审,按上述对每例死亡的病因、处理过程进行全面的临床分析。结果:综合评定结果:不可避免死亡189例,创造条件可以避免死亡110例,可避免死亡60例。脐带因素造成的死因孕周≥35 W明显高于28～34+6W(P<0.05)。结论:发展和提高产前诊断和产前保健技术,加强对患者孕期知识的健康教育,加强Ⅰ级医院医务人员的基础理论知识的培训,加强高危妊娠的管理,积极防治妊娠并发症是降低围生儿死亡的重要措施。 Objective: To investigate the causes of sudden fetal death in the third trimester of pregnancy and to reduce perinatal mortality. Methods: A retrospective analysis of 359 cases of fetal abortion in late trimester of pregnancy from January 2006 to September 2011 in this area was conducted. The perinatal mortality was divided into three types: (1) inevitable death; (2) creation Conditions to avoid death; ③ can avoid death. All cases participated in the district-level perinatal death review, according to the above each cause of death, treatment process for a comprehensive clinical analysis. Results: The comprehensive assessment results: inevitable 189 cases of death, to create conditions to avoid death in 110 cases, 60 cases to avoid death. The cause of umbilical cord death caused by gestational age ≥35 W was significantly higher than 28 ~ 34 +6 W (P <0.05). Conclusion: To develop and improve prenatal diagnosis and prenatal care techniques, to strengthen the health education of patients during pregnancy knowledge, to strengthen the training of basic theoretical knowledge of medical staff in Grade I hospitals, to strengthen the management of high-risk pregnancies, and to prevent and treat pregnancy complications actively Important measure of child death.