The skull is the hardest piece of bone tissue in the human skeleton, and it builds a wall of defense for the brain. However, the skull is not unbreakable, and a sudden impact from an external force can cause damage to the skull. Once the skull is damaged, there are many problems that follow, and in order to prevent further damage, it is imperative to have skull repair surgery. Of course, one of the most important aspects of cranial repair is the choice of material used for the repair. Early cranial repair materials were mostly bone cement, silicone, plexiglass, etc. Later on, titanium mesh materials were introduced. Titanium mesh material is much more advanced than those materials in the past, but its performance is still not very satisfactory, and some problems may occur, such as postoperative infection and rejection, affecting the CT MRI, wear and tear of the scalp, exposure of the material, and collapse and deformation under the force, and so on. Will I sleep and deform after cranial repair of titanium mesh? This is the question that many patients are afraid of, after the operation, they are always worried, afraid of a careless touch, which will lead to material collapse and deformation, and even more need to carry out a second operation, adding a lot of pain to themselves. Normal sleep generally will not be deformed, but if hit by external forces, then the strength of the titanium mesh hardness may not be enough to resist, there may be deformation. It is true that titanium mesh material may have these defects, and there is no shortage of clinical examples, so can we choose a more advanced and safe material? Currently, our team is using the new polyetheretherketone PEEK material for surgery and has achieved very good results. PEEK material is a special polymer material with excellent performance in terms of strength, hardness, elasticity, thermal insulation and tissue compatibility, which is very close to the autologous skull, and is currently the ideal material for skull repair. In addition, we also introduced the concept of cosmetic surgery in the operation, and comprehensively carried out PEEK cranial bone repair plastic surgery, the effect is more natural and beautiful.