The best age for women to give birth is between 23-35 years old; if the child is born too young, the mental and physical development is not very mature, which will have certain effects on the pregnant woman and the newborn; if the child is born too old, the body is in a state of gradual decline, which will easily cause fetal malformations and other pathologies, which will cause a certain burden on the family life of the patient and society. However, some women who have children above the age of 40 have normal children, and not every pregnant woman of advanced age will have a difficult birth or a malformed child, but the older the child is, the higher the probability of malformation.