In our current life, there are various accidents, a falling object or a traffic accident can bring different degrees of damage to our body, such as a missing piece of skull. We all know that the skull is the protective layer of the brain tissue, and the missing skull not only affects the aesthetic appearance, but also brings irreversible damage to our health. It is possible for a child to grow up with a small skull loss, but if the area is too large, it is unlikely to grow up by itself, and if an adult has a skull loss, it is unlikely to heal by itself. Therefore, we must not take a chance and go to the hospital for skull repair surgery in time is the right way. Many hospitals use titanium mesh material for cranial repair surgery, although it has certain effect, there are many shortcomings of this material. For example, post-operative rejection reaction is big, affects the future CT MRI, and requires secondary repair for material exposure, etc. Patients feel painful and helpless. PEEK is a new type of polyether ether ketone material, also known as PEEK, which is unique and advanced in that its properties are comparable to those of autologous cranial bone, and it can be customized according to the patient’s skull structure, allowing for a high degree of restoration of the patient’s skull shape and a beautiful postoperative result. PEEK has become a better value material for cranial repair surgery.