Accidents always come when we are not paying attention, and there are many people around us who have skull defects and other such problems due to a certain accident. Cranial defects are harmful and skull repair is the best policy. Patients with skull defects should go to a regular hospital early to take appropriate repair materials for repair. Cranial repair surgery is a routine procedure often needed in neurosurgery. Skull repair surgery techniques are becoming more and more mature, and repair materials are being updated and improved. From the initial pile plate and metal plate, to the later plexiglass, bone cement, silicone, etc. to the current commonly used titanium mesh and PEEK materials, the material performance has become better and better along the way, and the restorative results have become more and more desirable. Currently, polyetheretherketone is a cranial repair material with excellent performance and relatively good results, and is favored by neurosurgeons and most patients with cranial defects. Polyetheretherketone is a polymer material with strong histocompatibility, even with various properties of human cranial bone, and good postoperative recovery. Once a patient’s friend has a cranial defect, they must go to a regular hospital for cranial repair surgery as soon as possible, and they must choose a truly ideal cranial repair material to achieve better cranial repair results. peek material has very good physical properties, toughness, strength, insulation, elasticity, stability and other aspects are almost similar to the autologous cranial bone, and secondly, PEEK material does not interfere with ray Secondly, PEEK does not interfere with radiation transmission, does not interfere with postoperative CT MRI results, and it is three-dimensionally shaped to achieve a very perfect structural repositioning.