Cranial repair is a surgical procedure for patients with cranial defects caused by cranial trauma and diseases. The role of the surgery is mainly to repair the defective part of the skull and rebuild the protective shell of the soft tissue of the brain. At present, with the rapid development of economy, more and more people are suffering from cranial defects due to traffic accidents, falling objects, various intracranial diseases, etc., which makes cranial repair a common surgery. Currently, most hospitals are using titanium mesh material for cranial repair, which has certain disadvantages, such as poor compatibility, high infection, and thermal conductivity, relative impermeability to X-ray and foreign body reaction. A new type of polymer PEEK material is used clinically for cranial repair, and the PEEK material is light and free of foreign body sensation after cranial repair surgery. In addition, CT/MRI tracking is easy, and there is no artifact interference with brain pacemakers, magnetic stimulation, or electrical stimulation. Cranial repair has become a more routine procedure in the medical field, but there are a few patients who are worried or have questions about the effect of cranial repair on life expectancy. Cranial repair surgery is not very difficult, it does not move the soft tissues inside the skull, no infection and other problems occur after surgery, and after cranial repair, it is possible to resume normal life without affecting life expectancy.