Cranial repair surgery is a relatively common surgical procedure. Cranial trauma and brain surgery to remove bone flaps, removal of benign tumors or tumors of the skull, chronic osteomyelitis of the skull, etc. can cause defects in the skull, which require urgent repair of the skull. Some patients may still have some psychological concerns about undergoing cranial repair surgery. For example, some patients with cranial defects are concerned about the risks associated with cranial repair surgery. Cranial repair surgery is a relatively safe procedure with few risks. Cranial bone repair does not involve brain tissue or cerebral blood vessels at all, but only repairs the defective bone window, so it is very safe. The latest cranial bone repair material polyether ether ketone (PEEK for short), which is now being applied, is a bionic material, which is much safer compared to ordinary titanium mesh materials. This PEEK material can be highly compatible with the autologous skull, and is comparable to the performance of the autologous skull in terms of elasticity, heat conduction, hardness, stability, etc. Especially for pediatric patients, it can better adapt to the growth and development of the autologous skull.