Early or late closure is a sign of abnormal growth and development. In Chinese medicine, the protruding fontanelle is called fontanelle filling, the sunken fontanelle is called fontanelle trapping, and the late closing of fontanelle is called uncranial. Delayed closure of the fontanelle is often seen in infants with rickets, hydrocephalus, cretinism and overgrowth. So, what are the measures to prevent delayed closure of fontanelle in young children? The following are measures to prevent delayed closure of fontanelle in young children: 1, to promote the appropriate age of childbirth from the relevant data show that the incidence of hydrocephalus malformation with the increasing age of pregnant women and the trend of increasing. Generally, the incidence rate of 25-29 years old group is the lowest, but the difference is not significant, after 30 years old, the incidence rate has an increasing trend. Therefore, advocating the appropriate age of childbirth is of some significance to prevent the occurrence of hydrocephalus children. 2, 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. 3.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 pregnancy, it is necessary to strengthen the application of ultrasound in prenatal diagnosis, early termination of pregnancy, prevention of the birth of children with hydrocephalus, and reduce the birth rate of congenital hydrocephalus.