The skull plays a protective role for the brain, but nowadays, the incidence of skull defects has increased greatly due to the prevalence of various traffic accidents. Once the skull is damaged, the brain tissue may be threatened by the outside world at any time and the health is in crisis, so the patient naturally cannot be careless. Cranial defects are a matter of life and health, so it is important to go to the hospital for cranial repair surgery in time to avoid further damage. When it comes to skull repair surgery, many people always think that it will be very dangerous. But it’s not as scary as you think. Cranial repair surgery is actually a common neurosurgical procedure, and the safety of the surgery is very high, and the technology has become very mature after continuous development. The key to skull repair surgery is the use of skull material, which is directly related to the post-operative effect. In the past, it is more common to use bone cement, plexiglass, etc., but these materials may produce some problems after surgery, and they are generally no longer used. Nowadays, many hospitals use titanium alloy material, which has certain progress and advantages compared with traditional materials, but there are still some unavoidable defects. For example, postoperative infections, rejection reactions, wear and tear of the scalp, the impact of CT MRI, the patient’s sensitivity and discomfort to the external hot and cold environment, and even the phenomenon of material exposure. It is because of these that titanium materials are no longer recommended for use. The current medical recommendation is a new type of polymer material, namely peek material, peek material has high tissue compatibility, no need to worry about adverse reactions after surgery, which really makes up for the disadvantages of various traditional materials and has achieved remarkable surgical results.