Cranial repair is a routine procedure in neurosurgery and is generally performed in many larger local hospitals. However, it is not easy to do it well, and post-operative complications such as post-operative infection, rejection, collapse and deformation, material exposure, etc. occur from time to time. What is pus in the wound after cranial repair? If the situation is not very serious, usually the regular anti-infection treatment can recover well; however, if the situation is very serious and the simple anti-infection treatment cannot control it well, it may be necessary to remove the repair material by surgery, and after the infection is well controlled and the wound is healed well, then the skull repair can be performed again. repair. I have seen a patient who had a scalp infection after titanium mesh skull repair, resulting in material exposure. The patient was from Jiangxi province and had a skull defect after a traumatic car accident about six years ago. Recently, the scalp became infected and the titanium mesh material was exposed. After coming to us, we treated him with anti-infection therapy to quickly control his condition, and used special scanning technology to acquire 3D CT images of the skull without removing the titanium mesh material, applied computer-aided 3D reconstruction, and designed and fabricated a polyetheretherketone PEEK plate to precisely fit the bone window. The team then performed the titanium mesh removal and PEEK plate placement surgery to recreate the skull repair, achieving excellent results. The postoperative outcome of cranioplasty is highly dependent on the material used for the cranioplasty and the level of the surgeon. Traditional titanium mesh materials, bone cement, and plexiglass have some problems, and the incidence of postoperative complications is high, and pus infections in the wound after cranial repair sometimes occur. Currently, polyether ether ketone PEEK is a special polymer material that is comparable to autologous cranial bone in terms of stiffness, strength, elasticity, thermal insulation, histocompatibility, radioactivity, magnetic compatibility, etc. It can effectively avoid the above problems and become a new trend in cranial repair materials. Currently, we are using PEEK as a cranial repair material, and we are constantly improving and upgrading the technology and optimizing the design of the material, as well as innovatively introducing the concept of cosmetic surgery, so as to carry out comprehensive PEEK cranial repair and plastic surgery, which can achieve anatomical integrity, functional perfection, and aesthetic appearance of the overall unity, and achieve good repair results, which are widely praised and appreciated.