Stillbirth refers to the death of the fetus in utero after 20 weeks of gestation. Most of the stillbirths do not have obvious signs, so most mothers are unconscious of the situation of stillbirth, some pregnant mothers have a larger month, can feel the fetal movement disappeared, found in the hospital examination of the uterus is no longer enlarged, the uterine height abdominal circumference does not match the month, stillbirth for a long time can lead to the mother-to-be general weakness, loss of appetite, lower abdominal cramps, etc., in the hospital examination ultrasound indicates no fetal heart, fetal movement, skull The baby mothers and fathers feel sad, why would stillbirth occur in pregnancy? 1, placenta and umbilical cord factors. The fetal blood and nutrients during pregnancy are through the role of the placenta, such as placental abruption, umbilical cord sail attachment, umbilical cord true knot, umbilical cord entanglement and other abnormalities of the placenta and umbilical cord, resulting in fetal hypoxia, eventually leading to the occurrence of stillbirth; 2, maternal factors. If the mother has serious pregnancy complications, such as hypertension during pregnancy, gestational diabetes, cardiovascular diseases, immune system diseases and other causes of intrauterine hypoxia, or local factors of the uterus leading to local ischemia of the uterus, will affect the development of the fetus, leading to stillbirth in serious cases; 3. Fetal factors. Such as the presence of serious fetal malformations, intrauterine fetal infections or serious genetic diseases can affect the normal development of the fetus and eventually lead to stillbirth. Fetal death in utero for pregnant mothers, both to accept the fact that the fetus died, and to perform induction of labor on the body losses, so, while looking for the causes of fetal death in utero, we should also pay attention to good maternal psychological construction, early detection of abnormal mental activity, adjust the body, ready for the next pregnancy.