Cranial repair is a routine operation in neurosurgery, which is a surgical procedure to repair cranial defects caused by various reasons, with the aim of restoring the closed cranial cavity of the head, restoring a normal and stable cranial environment, and guaranteeing the normal operation of all neurological functions and life activities. Materials such as glass, bone cement, silicone, etc. are no longer used in clinical practice due to various defects. At present, titanium mesh is the most widely used cranial repair material in most hospitals, but this material also has certain defects, such as postoperative infection and rejection, cold and heat sensitivity, easy to deformation by force, affecting the CT magnetic examination and so on. Now there is a more advanced material called polyetheretherketone peek material. What is polyetheretherketone peek material? Polyetheretherketone peek material is a new type of special polymer material with very good performance, which overcomes the problems that may be produced by titanium mesh material and can achieve very good repair effect when applied in cranial repair. peek material is very close to human’s own cranial bone in terms of hardness, elasticity, heat insulation, histocompatibility, plasticity and so on. It can also be customized to the shape and structure of the patient’s skull and can be shaped in three dimensions to highly restore the skull’s appearance. The neurosurgery team is widely using this advanced material for skull repair surgery, and has achieved very good results in clinical practice, which has been well received and recognized by patients and their families. Neurosurgery not only uses this advanced material, but also constantly carries out technical innovation and upgrade, optimizes the design of the material, and adds the concept of cosmetic plastic surgery, so that the comprehensive peek cranial repair and plastic surgery can achieve the organic unity of beautiful appearance, perfect function and structural integrity, and the effect is very outstanding.