A deficient skull in children is very detrimental to the healthy growth and psychological development of children. The skull is the hard shell that protects our brain tissue, and if part of the shell is missing, the brain tissue is very insecure and vulnerable to external influences that can cause damage. Defects in the skull can also disrupt the relative balance of pressure inside and outside the skull or in the various physiological spaces within the skull in children, which can have an impact on the normal development of the skull and increase the chances of epilepsy in children. At the same time, the defect in the top of the head can cause children to have psychological defects, low self-esteem, timidity, and inability to hold up their heads, so early repair of the skull is important for children’s subsequent growth. This is because medical experts have proven through relevant experiments that the risk of surgery during different periods of growth and development is positively correlated with the growth rate of the skull, and the rapid growth period of the skull is from 0 to 3 years old, and after 3 years old, the growth rate is relatively slow and the risk of repair is less. Although cranial repair is a routine procedure in neurosurgery, children’s skull will continue to grow afterwards, so the material for cranial repair must be chosen carefully. The currently used peek material is very suitable for children, the peek material is comparable to the performance of autologous bone, its hardness, elasticity, heat insulation, stability are very close to human cranial bone, and it can adapt well to the growth of children’s autologous bone when applied to children, and the shaping ability of peek material is very strong, so that children are very beautiful after the repair, and then by the hair cover basically will not be seen.