Expectant mothers should have regular prenatal check-ups during pregnancy, not only to ensure their own health, but also to observe whether the fetus is developing normally. Every pregnant woman should pay special attention to the prevention of fetal malformations, because there are many causes of fetal malformations, which will be very dangerous if not prevented. The pathological causes of fetal malformations are genetic factors: the internal causes of fetal malformations mainly come from genetic factors, that is, abnormalities in the genetic material of the parents. When there are abnormalities in the number and structure of chromosomes in genetic genes, teratogenesis will occur. To