Monochorionic monoamniotic twins have a relatively low success rate of about fifty percent and are prone to fetal arrest. Monochorionic monoamniotic twins are twin pregnancies with monochorionic membranes and amniotic sacs, resulting from the division of a single fertilized egg, and are a high-risk pregnancy. Since the two fetuses share the same amniotic cavity and there is no membranes between the two fetuses, the umbilical cord is likely to become entangled or knotted during pregnancy, resulting in insufficient nutrients and oxygen intake for the fetus, causing the fetus to stop developing. Twin fetal transfusion syndrome may also occur, resulting in fetal death. If a single-chorion, single-goat twin pregnancy is detected after pregnancy, it is important to strengthen the monitoring of the pregnant woman and to determine the condition of the fetus through regular ultrasound examinations. If there is excessive amniotic fluid or twin-twin transfusion syndrome, the mother should be hospitalized for observation and treatment, and if necessary, measures should be taken to reduce the number of fetuses. If the pregnant woman’s physical condition does not permit, and the fetus has already developed abnormalities, the pregnancy should be stopped in order to avoid harm to the pregnant woman’s health.