Cranial bone is like a strong fortress of the brain, which plays an important role in defense, protection and support, but nowadays, cranial defects are very common, once the cranial bone is damaged, it will certainly destroy the cranial cavity closure and the stability of the intracranial environment, which will then lead to cerebrospinal fluid circulation and blood circulation disorders, causing a series of neurological symptoms. The typical symptoms of cranial defect may include headache, dizziness, poor mental activity, etc. In addition, some of them may have weakness of limbs, loss of vision, emotional irritability, etc., which seriously affects normal life and work, and if the defect area is accidentally bumped, the consequences are more serious. Therefore, when there is a problem of skull defect, you need to go to the hospital in time for more skull repair surgery to restore the integrity of the cranial cavity as soon as possible. However, there are also rules to do skull repair surgery, especially to choose safe repair materials so as to have a better repair effect. At present, most local hospitals use titanium mesh material, but clinical verification shows that titanium mesh material has a lot of shortcomings, such as postoperative infection, rejection reaction, affecting the postoperative medical examination, in addition, because of the poor insulation performance of titanium mesh material, so the skull repair with titanium mesh will be afraid of cold and heat. After the titanium mesh material, a new polymer material emerged, which is now widely used, namely polyether ether ketone PEEK, a safer and more advanced material with properties comparable to those of autologous cranial bone, and an embedded repair method with a smooth and flat skull appearance after surgery. At the same time, our team has introduced the concept of cosmetic surgery, and the postoperative result is really natural and beautiful.