Prevention: 1. Strengthen early prenatal diagnosis and early termination of pregnancy to prevent the birth of children with hydrocephalus. Early prenatal diagnosis of children with hydrocephalus is an important way to prevent the birth of children with hydrocephalus. As obvious hydrocephalus can be detected by ultrasound at 12-18 weeks of gestation, it is necessary to strengthen the application of ultrasound in prenatal diagnosis, early termination of pregnancy, prevention of the birth of hydrocephalic children, and reduce the birth rate of congenital hydrocephalus. 2.Promote the knowledge of eugenics and reduce the number of fetuses. According to relevant data, the risk of hydrocephalus in fetus can be increased by the increase of maternal births. The incidence of hydrocephalus increases significantly in those with more than two children. Therefore, to promote knowledge of eugenics, reduce the number of births, is one of the ways to prevent hydrocephalus children. 3, advocate appropriate age birth from the relevant data show that the incidence of hydrocephalus malformations with the increasing age of pregnant women and the trend of increasing. Generally 25-29 years old group has the lowest incidence, but the difference is not significant, after 30 years old, the incidence has an increasing trend. Therefore, advocating the appropriate age of childbirth is of some significance to prevent the occurrence of hydrocephalus children. 4, strengthen eugenics education, improve the cultural quality of the population. According to relevant statistics, the occurrence of hydrocephalus children and maternal literacy, the lower the literacy of pregnant women, the higher the incidence of illiterate and semi-literate offspring have the highest rate of disease. Therefore, in order to improve the health quality of the population, we should first improve the cultural quality of the population, in order to enhance the public’s acceptance of eugenics education and self-care awareness.