Since ancient times, giving birth to a child is a ghost gate for women, and I don’t know how many women have lost their lives here. Nowadays, although the medical science is more advanced, but the birth of a child is still a dangerous thing, especially in the process of labor and delivery of amniotic fluid embolism, which is simply a nightmare for the mother, the slightest accident, there is a fear of life. Amniotic fluid embolism is the terrible thing is the rapid onset of fierce, often too late to do many laboratory tests patients have died. So what is amniotic fluid embolism? How is it caused? Amniotic fluid embolism is due to contamination of amniotic fluid in the tangible material (fetal cui hair, keratinized epithelium, fetal lipids, fetal feces) and pro-coagulant substances into the maternal circulation caused by the mother, that is, maternal in the process of delivery of amniotic fluid suddenly into the maternal blood circulation caused by acute pulmonary embolism, anaphylactic shock, disseminated intravascular coagulation, renal failure or sudden death of the serious complications of childbirth. Its incidence is 4/100,000 to 6/100,000. Although the incidence is not high, once it occurs, it may be life-threatening. Amniotic fluid embolism occurs during labor or at the time of rupture of membranes, and can also occur in the postpartum period. It is most commonly seen in term births, but is also seen in mid-term induced labor or forceps surgery. Symptoms of amniotic fluid embolism include chills, irritability, cough, shortness of breath, cyanosis, and vomiting, etc. Its triggers are mainly in women who have undergone labor; most of them have a history of premature rupture of membranes or artificial rupture of membranes; it is common in cases of excessive contractions or inappropriate use of oxytocin (oxytocin); and it is easy to occur in cases of early abruption of the placenta, placenta praevia, rupture of the uterus, or surgical deliveries. Although amniotic fluid embolism is dangerous, it does not occur for no reason, and a single factor does not cause amniotic fluid embolism. In the case of amniotic fluid embolism, the following factors are usually present: 1) increased pressure in the amniotic cavity (uterine hypercontractions or tonic uterine contractions); 2) rupture of the fetal membranes (2/3 premature rupture of the membranes and 1/3 spontaneous rupture of the membranes); and 3) presence of an open vein or sinus at the cervix or at an injury to the uterine body. Amniotic fluid embolism is risky, but it is not just unavoidable. The prenatal workup is important, and the experience of the midwife at the time of delivery is even more important. This is why it is important for women to have an experienced obstetrician present during labor and delivery.