It is often said that the skull is the defense wall of life safety, this is because the skull protects our brain all the time. However, accidents can happen at any time in life, and damage to the skull after an impact can be very dangerous. It is important to have a skull repair surgery in time to prevent further damage to the skull. However, it is important to pay attention to the choice of materials for skull repair surgery. Currently, the titanium mesh material is more widely used in the clinic, and it is obvious that the titanium mesh material has a great progress compared with the previous materials. However, after a large number of clinical verification shows that the choice of titanium mesh material for cranial bone repair surgery there are some unavoidable problems, the more serious of which is the titanium mesh material exposure. Titanium mesh cranial repair exposed rate and the reason is many people have doubts, according to the survey shows that the titanium mesh material repair cranial exposed rate is indeed quite high, the reason will be exposed is due to these points: one is the titanium mesh material histocompatibility is poor; the second is the surgical incision infection, the patient there is an allergic reaction also led to the material is exposed; three is because of the titanium mesh material is too large, fixation easy to loosening, and then there is a The third reason is that the titanium mesh material is too large and can be loosened easily when it is fixed well, and then it will be exposed. Once the titanium mesh material exposed phenomenon is really very troublesome, to timely repair surgery and remove the material, so that the previous surgery is done in vain. I believe that no patient is willing to take such a risk, so when doing cranial repair surgery should be carefully selected. However, there is a new type of material that is gradually becoming known, that is, polyether ether ketone PEEK material, the use of PEEK material really avoids the defects and shortcomings of the titanium mesh material, this is a very advanced polymer material, all the properties are comparable to the autologous skull, is the ideal choice for craniofacial repair surgery.