Umbilical cord prolapse refers to the rupture of fetal membranes when the umbilical cord is detached from the uterine opening and descends into the vagina or even exposed to the vulva, requiring termination of pregnancy as soon as possible. Umbilical cord prolapse is a dangerous obstetric emergency, mostly caused by cephalopelvic disproportion, breech presentation, excessive amniotic fluid, long umbilical cord and other cases of rupture of fetal membranes, which can easily lead to fetal hypoxia, or even fetal death in the womb, and other serious consequences, once the diagnosis is clear, it is necessary to terminate the pregnancy as soon as possible, and to do a good job of newborn resuscitation. If there are high risk factors for umbilical cord prolapse, we need to be highly alert to the occurrence of umbilical cord prolapse. When the fetal heart rate slows down after rupture of the fetal membranes, we need to carry out a vaginal examination immediately in order to find out whether there is umbilical cord prolapse and whether there is any umbilical cord vascular pulsation. When the umbilical cord is palpated next to the fetal preluminal or anterior to it as well as in the vagina and in the shape of a cord, it can be diagnosed and we need to terminate the pregnancy as soon as possible.