A child’s skull that is missing is very detrimental to the child’s healthy growth and mental development. The skull is the hard outer shell that protects our brain tissue, and if a part of the shell is missing, the tissues inside the brain are very unsafe and vulnerable to damage from outside influences. Defects in the cranium can also cause the relative balance of pressure inside and outside the pediatric cranium or the pressure in the various physiological spaces within the cranium to be disrupted, which can have an impact on the normal development of the cranium and increase the chances of epilepsy in the pediatric population. At the same time, due to the defect of the top of the head, it will make children have psychological defects, low self-esteem, timidity, and can not hold up their heads, so repairing the skull as early as possible is of great significance to the growth of children afterward. So, what is the best age to repair cranial defects in children? Medical experts all over the world have carried out a lot of research and intense discussion on this issue, synthesizing the explanations of many experts, it can be determined that the age of children’s cranial repair should be as far as possible after the age of 3 years old, this is because medical experts have proved through relevant experiments that the risk of surgery in different periods of children’s growth and development is positively correlated to the speed of growth of the cranial bone, and the children at the age of 0-3 years old is the rapid growth period of the cranial bone, so it is important for children to repair as early as possible. Children between the ages of 0 and 3 years have a rapid growth period, and after the age of 3 years, the growth rate is relatively slow, so the risk of repair is lower at this time. Although cranial repair is a routine procedure in neurosurgery, it is important to be careful when choosing materials for cranial repair because children’s skulls will continue to grow later in life. Some hospitals for cranial defects in patients with the use of peek material is very suitable for children, peek material and autologous bone properties are comparable to its hardness, elasticity, thermal insulation, stability are very close to the human skull, and applied to children can be well adapted to the growth of children’s autologous bone, and the peek material of the shape of the ability of the strong, so that the children after the repair of the very beautiful, and then after hair After the hair cover basically will not be seen.