The skull is there to protect the brain and it has a strong protective effect, but it can also be damaged when it is hit hard by external forces. In neurosurgery, there are many patients with cranial defects due to various factors. Of course not. A prolonged cranial defect has a significant impact on both physical and mental health. Cranial defect will affect the image of appearance, and the defective part will collapse partially after a long time, so the patient will become very low self-confidence; cranial defect will also affect the intracranial life activities, which will lead to cranial defect syndrome and damage the brain function, and the patient will be very insecure, and if another collision occurs, the consequences are unimaginable. The damage of cranial defect is multifaceted, patients should pay attention to it and go to the hospital for cranial repair surgery in time, which is a routine surgery and can be done in general large hospitals. But the choice of skull repair material is an important factor affecting the effect of the surgery, only a really good choice of material can greatly improve the success rate of the surgery and also reduce the pain of patients. At present, most hospitals use titanium mesh material, but after clinical practice verification, titanium mesh material has more postoperative problems, which is not the ideal choice. In contrast, we now use polyetheretherketone peek material is safer and more advanced, peek material to make up for the shortcomings of titanium mesh material, postoperative recovery is very good. peek material wear life how much time? peek material is a special polymer material with high stability, it has good performance in wear resistance, high temperature resistance, etc., long service life, can be used for a lifetime, is the new trend of cranial repair material.