When hearing about skull defect, people subconsciously think that it is not a small problem, after all, the skull plays a key protective role for the cranial tissues, once skull defect occurs, it means that the defense wall of the intracranial tissues is destroyed, and if it is not taken seriously, more serious problems may occur next. Clinically, skull defect may cause patients to have dizziness and headache, and patients’ memory will be reduced, and their activities will not be good, and their emotions will be very unstable, which is mainly because skull defect affects the normal operation of brain nerve function, and in the long run, the problem will become more and more serious, so patients should not be careless. Moreover, after the skull defect, the patient will lack the sense of security and fear that the secondary collision will damage the brain tissue, which will pose a threat to life safety. Cranial defects should be repaired in time, but is cranial repair good for nerve recovery? Yes, cranial bone repair surgery can restore the closed cranial cavity environment, restore the stability of the cranial cavity environment, and help the brain nerve function to resume normal operation. Cranial repair surgery is of great significance, and nowadays, all major hospitals can do this surgery, but it is not easy to do it well, especially if the repair material is not chosen correctly, the result may not be ideal. At present, many hospitals use titanium mesh material, which has progressed but has many shortcomings. The polyether ether ketone peek material we use makes up for the defects of titanium mesh material very well, which is a new type of polymer material, and all the properties are very close to the autologous cranial bone. We also carry out peek skull repair plastic surgery on the basis of combined with the concept of aesthetic plastic surgery in a comprehensive way, which is very comfortable and protective after surgery, and has been highly affirmed by the majority of patients and their families.