The skull is the hardest bone in our body, because it is the protective barrier that allows our brain tissue to work and function properly. However, accidents are inevitable and many people suffer from cranial defects due to accidents, which can be extremely dangerous to health. Once the skull is damaged, it is time to face the skull repair surgery, which is the only way to avoid more damage. The first thing to consider about skull repair surgery is the repair material. At the beginning, bone cement and plexiglass were used, but after many surgeries, these materials had some problems and were slowly eliminated. Later on, titanium mesh was used, but although it has its progress, it still has defects and shortcomings. In order to achieve a better skull repair effect, there is now a more advanced material, namely peek material. peek material is a polymer material, the performance in all aspects is comparable to human skull, and can be designed according to the shape of the patient’s head for three-dimensional shaping, highly restore the structure of the skull, the patient will not be rejection after surgery, and do not have to worry about the infection problem, is currently doing skull repair surgery is very ideal material. The ideal material for skull repair surgery. The price of PEEK material is a little higher than traditional restorative materials, but the results achieved are well known. In addition, the size of the skull damage varies from patient to patient, and the cost is different. Patients do not need to worry, there is medical insurance to enjoy the reimbursement policy.