The cranium protects our brain tissue and is an important life-saving barrier. However, many people suffer damage to their skulls due to unavoidable factors, which is a very serious problem. Damage to the skull can be resolved through cranial repair surgery, so as to avoid causing more damage. In fact, cranial repair surgery has existed for a long time in the history of mankind, and cranial repair materials have undergone constant changes and become more and more advanced. Titanium mesh is one of the materials that are widely used in clinical practice, and it has certain advantages over earlier materials. However, it has been clinically proven that the use of titanium mesh for cranial bone repair surgery is difficult to avoid some adverse reactions. The use of titanium mesh for cranial bone repair is more common is the titanium mesh has exposed the situation, titanium mesh cranial bone repair what reason will be exposed? It is reported that the titanium mesh is more likely to be exposed, titanium mesh is exposed mainly because of the poor tissue compatibility of the material. In addition, it is also related to other factors, such as surgical incision infection, patients have allergic reaction will lead to the emergence of exposure; fixed way will also have an impact, because the titanium mesh is large, easy to loosen after fixation, the problem of exposure; and then there is the improper surgical operation will also lead to titanium mesh exposure. Exposure of titanium mesh is very troublesome, and the material has to be taken out again, which is tantamount to a waste of time. In order to better achieve the safety and effect of cranial bone repair, a new type of material is gradually being popularized, that is, peek material. peek material avoids all the limitations of titanium mesh material, it is an advanced polymer material, with good thermal insulation, strength, elasticity and hardness are comparable to the autologous cranial bone, which is an excellent material for cranial bone repair surgery.