Long-term defects can be harmful to children in a number of ways, affecting brain development, causing craniosynostosis syndrome in children, and increasing the risk of re-injury as children are active. The child will also resist some things, such as fear of the sun, fear of vibration and even fear of loud noises, and so on. It also affects children’s lives and socialization, causing psychological disorders in children. Early repair in children can protect the brain tissue in the defective area from re-injury, and at the same time create good conditions for further growth of the new bone, creating an ideal cranium with a normal physiological curvature. 1-3 months after the injury is a rapid period of neurological recovery, early restoration of the integrity of the cranial cavity is a prerequisite for further recovery of neurological function, which not only improves the hemodynamics of the local brain tissue, but also relieves the compression of atmospheric pressure on the brain tissue of the defect area. For some children with craniocerebral injury in the later stage of limb paralysis, aphasia, mental or intellectual disorders associated with the site of injury has a different degree to promote the recovery effect. The material of children’s cranial repair must also pay attention to the need to choose a good repair material, the general material will cause a lot of sequelae and discomfort. Currently, advanced PEEK materials are used in clinical practice, which can be more accurate to the anatomical shape of the patient, with excellent hardness and stability, far better than the traditional materials on the market.PEEK materials have become a new trend in cranial bone repair surgery.