Titanium mesh material repair skull after the material exposure is really a big problem, which is mainly due to three reasons: one part may be related to the material rejection, titanium mesh material, although the histocompatibility has been good, generally will not appear rejection phenomenon, but clinically there may still be some patients on the titanium mesh material of the immune response is more sensitive, the emergence of the rejection of the scalp tissue ablation ulcerated, the material exposure Another part may be due to postoperative wound infection, resulting in poor skin healing, there will also be tissue breakage and material exposure; there may be a part of the titanium mesh material on the scalp to produce abrasion or cutting damage, because the titanium mesh is a cover repair, the edge of the material is relatively sharp, and even more sometimes the titanium mesh material may be deformed, the edge of the warped, which will cause damage to the skin, ultimately resulting in titanium mesh exposure; of course, there may also be titanium mesh exposed; of course, there may also be some patients with sensitive immune response to the titanium mesh material, resulting in ablation and breakage of scalp tissue and material exposure. Of course, there may be other reasons. Exposed titanium mesh is very dangerous, will further increase the risk of infection or even cause intracranial infection, but also susceptible to external aggression, injury to the brain tissue, affecting nerve function, but also has a great impact on the appearance of the patient’s psychological burden, so it should be dealt with as soon as possible, and if necessary, need to take out the titanium mesh, until the skin grows well, and then re-do the cranial bone repair. At present, a new type of PEEK material is used as the implant material for cranial bone repair. This new material has excellent performance, comparable to autologous skull, and has become a new trend in cranial bone repair materials, and has been gradually popularized and popularized around the world. However, besides the material, the surgical technique is also very important. In some general hospitals, cranial bone repair by less experienced surgeons may result in subcutaneous effusion, postoperative infection, temporalis muscle atrophy, leading to serious consequences, asymmetry in cranial appearance and so on. In these aspects, we have done a lot of technical improvements and upgrades and optimization of material design, unique thickness of the material, mesh aperture, edge groove, fixed lap piece design, etc., in the operation of the innovative unique tissue separation and reset technology, temporalis muscle suspension reset and fixation technology, as well as to increase blood flow, maintain tissue activity, to ensure that the function of the unique means of medicine, and so on, and the introduction of the concept of aesthetic plastic surgery, a comprehensive With the introduction of the concept of cosmetic plastic surgery, PEEK cranioplasty can achieve the overall unity of anatomical restoration, functional perfection and beautiful appearance.