Polyether ether ketone PEEK material, as a new type of special polymer material, has been more and more widely used in neurosurgery for cranial bone repair surgery, and has become a new trend of cranial bone repair material, which has been gradually promoted and popularized. However, the use of PEEK material for cranial bone repair also has high technical requirements, and needs to be operated by experienced senior neurosurgeons to ensure good repair results. Some patients ask if there will be any effusion when using PEEK for skull repair. There is such a possibility, although the likelihood is relatively low, but still there. In fact, not only with PEEK, but also with other materials such as titanium mesh, the risk of subcutaneous effusion is even higher; furthermore, it is not only in cranial repair surgery, but also in most surgical procedures, and the surgeon’s role is to minimize the chances of such a situation occurring. This requires the surgeon to have more clinical experience and to perform more specialized and precise surgical operations. Therefore, PEEK skull repair surgery needs to be performed by a senior surgeon who is specialized in the field, so that the risk of fluid buildup can be reduced and a better repair result can be achieved. Sometimes, in some general hospitals, some less experienced surgeons perform PEEK skull repair may not only cause subcutaneous fluid accumulation, but also temporal muscle atrophy and falling, resulting in temporal collapse, bilateral asymmetry and unattractive phenomenon, as well as some other discomfort or functional defects. At present, our team has widely used polyether ether ketone PEEK as cranial bone repair material for many years, and has carried out hundreds of PEEK cranial bone repair and plastic surgery, and has accumulated rich clinical experience. At the same time, we continue to improve the technology and material optimization design, unique material thickness, mesh aperture design, edge groove design, unique tissue separation and reset technology, temporal muscle suspension and fixation technology, etc., can effectively prevent the occurrence of subcutaneous effusion, temporal muscle atrophy, etc.; at the same time, the team innovatively introduces the concept of cosmetic plastic surgery, carried out by PEEK cranioplasty, can achieve anatomical integrity, functional perfection, At the same time, the team innovatively introduces the concept of cosmetic plastic surgery, and carries out PEEK cranioplasty to achieve anatomical integrity, functional perfection, and the overall unity of beautiful appearance.