In the history of modern medicine, cranial bone repair has gone through a long journey of development, and the effect of repair is affected by many factors, among which the material is very important. A material that performs well in all aspects not only improves the success rate of the surgery, but also greatly reduces the chances of postoperative complications. Cranial repair materials have gone through iterations, and the rise of each new material and the withdrawal of the old material is a great innovation in science and technology, as well as a great progress in neurosurgery. At present, titanium mesh is commonly used as cranial implant material in China, and titanium mesh cranial bone repair is performed. Titanium mesh is a metal property, although it is corrosion-resistant and can resist body secretions. But it still has many defects, first of all, it is a covered repair, easy to cut and wear the scalp after surgery, titanium mesh exposed; secondly, it is poor histocompatibility, postoperative infection, rejection phenomenon occurs; and titanium mesh hardness is high, easy to collapse and deformation of external forces. Many patients in the clinic after titanium mesh repair surgery, scalp bulging situation. So, what should be done about the bulging scalp on titanium mesh for skull repair? This situation is mainly due to the titanium mesh depression and deformation, it is recommended to go to a professional cranial repair hospital for a detailed examination, scientific assessment, if you need to replace the material, you can consider the advanced peek material. Peek cranial bone repair surgery is now very mature, it is a new type of peek as the implant material for cranial bone repair, which greatly reduces the rate of postoperative rejection and infection; at the same time, it adopts the embedded repair method, which effectively avoids the phenomenon of skin abrasion and ulceration, depression and deformation, and material exposure caused by the traditional titanium mesh cover repair; our Department of Neurosurgery has upgraded and improved the original peek cranial bone repair technology after many years of clinical exploration and summarization. After years of clinical exploration and summarization, our Department of Neurosurgery has upgraded and improved the original peek cranial bone repair technology, innovatively introduced the concept of plastic surgery, and formed a mature technology – peek material cranial bone repair. The team has a set of systematic and complete solutions for the cosmetic treatment of scalp scar, postoperative asymmetry of head shape, temporal muscle atrophy and other problems. In addition, the team has successfully carried out titanium mesh removal and PEEK insertion cranial bone repair surgery, and achieved remarkable results.