Cranial defects are not a child’s play, because the skull is like a defense wall for the brain, with the protection of the skull, all the life activities in the skull can function normally. Some may wonder, can’t a skull defect heal on its own? The answer is that most of them do not, and probably only a very small percentage of children do. Long-term defects in the skull that are not repaired can have a significant impact, as the defect will not heal on its own and will collapse and deform, thus compressing the intracranial tissues. At the same time, the impact of cranial defects on the appearance of the image is also more obvious, the patient’s psychology will be very hit, and in the long run the patient will become low self-esteem, and even lead to depression. Moreover, after the cranial defect, the brain loses the external protection, the intracranial pressure and intracranial environment will be changed, and the cerebrospinal fluid circulation and blood circulation will be impaired, which greatly impairs the cerebral nerve function of the patients. In the clinic, there are a lot of patients with a series of craniosynostosis syndrome, the main manifestations may include dizziness, headache, emotional abnormalities, and some patients may also be combined with visual impairment and hearing impairment and so on. Cranial defects should be treated and repaired in a timely manner. Are the nerves restored after cranial repair? Cranial repair surgery is of great significance, through the cranial bone repair to better restore the closure and integrity of the cranial cavity, promote the stability of cerebrospinal fluid circulation and blood circulation, the recovery of cerebral nerve function also has a great role, but also can alleviate and improve the patient’s physical discomfort symptoms. However, cranial repair surgery should pay attention to the choice of materials, a really good repair material can greatly improve the success rate of the operation, and the postoperative recovery effect will be better; in addition, the surgeon’s technical experience is also very important.