The importance of the skull is clear to everyone, and its duty is to protect the brain and ensure the normal operation of the intracranial tissues, but nowadays, skull defects are very common in neurosurgery, and when a patient has a skull defect, the patient will become extremely insecure and the intracranial tissues will not function normally, and the whole body function will be affected. For example, the intracranial pressure and intracranial environment will be changed after cranial defect, and the brain nerve function will be affected accordingly, which will cause a series of cranial defect syndrome, such as headache and dizziness, weakness of limbs, emotional irritability, insomnia and anxiety, slow reaction, etc. Cranial defect can not be careless, especially if the area of cranial defect is large, it is necessary to go to the hospital for cranial repair surgery as soon as possible. However, it is very important to choose the right material to do the skull repair surgery, the material is good is directly affect the post-operative recovery effect, many hospitals are currently using titanium mesh material, titanium mesh material is cheap, but there may be certain problems, such as post-operative infection and rejection may occur, the affected area is sensitive to the external hot and cold environment, and even the risk of material exposure. At this time, a new type of polyether ether ketone PEEK material appeared, peek material is very safe and advanced, its performance is very stable, and the autologous cranial bone is very close, very good to make up for the defects and shortcomings of the titanium mesh material, the postoperative recovery effect is very good, is currently very ideal cranial repair material. Can peek material be used for cranial bone repair? Many patients are concerned about this issue, of course, it is possible. However, because peek material is not yet popular in China, only a few hospitals have carried out it now, so patients who need it are advised to choose the treatment carefully.