It goes without saying that we all know the importance of the cranium, which as an important umbrella to protect the brain tissue of the human body, must not have problems. However, in real life, many people have serious skull defects due to traffic accidents or being hit by heavy objects, which has a great impact on their lives. Regardless of the reason for the skull defect, the first priority is to have a skull repair surgery so that you will not bring more harm to yourself. Not only does a skull defect have an immediate impact on appearance, but the patient’s mind can feel inferior. Moreover, cranial defects will make the brain tissue lack a hard protective shell, and the intracranial tissues will easily be attacked by the outside world, which will lead to a series of serious problems. If the skull defect is not repaired in time, the consequences are even more unimaginable, and patients must pay attention to it. Cranial repair surgery is a mature technology, the material is very important, and in terms of current medical technology, cranial repair surgery is not a major surgery, this technology has been very mature. When considering cranial repair surgery, it is important to find good materials for the repair, good repair materials can play a decisive role in the postoperative results are more ideal. In order to better perform the skull repair surgery, we use a new type of material – PEEK material, PEEK material is elastic, high strength, good thermal insulation, tissue compatibility is also very good, can really highly restore the structure of the skull, is currently the ideal material to do skull repair surgery.