The occurrence of stillbirth may be caused by the following factors: first, placenta and umbilical cord factors, such as placenta praevia, placenta abruptio, vascular anterior, umbilical cord sail attachment, knotted, and wrapped around the neck, etc. It is stillbirth caused by placental bleeding and umbilical cord abnormalities that lead to fetal hypoxia. Secondly, it may be the factors of the pregnant woman itself, such as serious pregnancy complications, complications, suffering from hypertension disease, diabetes, uterine rupture, uterine malformation so that the local ischemia affects the placenta, the fetus appears ischemia and hypoxia leading to stillbirth. Third, the fetus itself factors, such as fetal developmental malformation, growth restriction, twin fetus transfusion syndrome, serious genetic diseases. The above description of stillbirth may be caused by a variety of factors, once the stillbirth occurs, it is best to terminate the pregnancy through surgery in time to avoid cavity infection.