Despite all the precautions, we still can’t avoid some accidents, such as car accidents, collision, falling down the stairs, etc. will cause our brain to be injured, and many patients need to be treated with debridement surgery, leaving behind cranial defects and serious collapse of the head. Without the protection of the skull, it is not only easy to cause instability of intracranial pressure or intracranial abnormality, but also easier for patients to develop psychological disorders, low self-esteem, depression, irritability and so on. Therefore, timely cranial bone repair is needed. Many patients will ask about the complications after cranial bone repair, which is rooted in the material of the repair is very related. Titanium mesh is commonly used for cranial repair, but postoperative feedback has been poor. Research has found that titanium mesh is essentially a metal property, take the cover type repair method, and the material performance is not good, the histocompatibility is not ideal, the heat insulation is not good, the hardness is not high, the shaping effect is not very good, and there may be a lot of postoperative complications, the common ones are the rejection of infections, titanium mesh exposed, the CT MRI is affected, and so on. Therefore, patients should also seek for more advanced and mature technology when preparing for cranial repair. At present, the neurosurgery team carries out polyetheretherketone peek cranial repair and plastic surgery, with the advanced concept of precise repair + cosmetic plastic surgery, based on the summary of many cases, to achieve four technical innovations. This technique, with peek as the implant material, can effectively avoid the many deficiencies that exist in titanium mesh cranial repair. In addition, this technology develops a personalized repair and plastic surgery plan for each patient with cranial defects, which ensures that the two sides are opposite each other after the surgery and the shape is beautiful and aesthetically pleasing. There are also unique material edge, thickness, mesh aperture design, unique tissue separation and reset technology, cosmetic plastic surgery technology, and ultimately achieve anatomical integrity, functional perfection, aesthetic unity.