Cranial bone repair is a relatively common surgical procedure. Cranial trauma and brain surgery to remove bone flaps, removal of benign tumors or tumor-like tumors from the skull, chronic osteomyelitis of the skull, etc. can cause defects in the skull that urgently need to be repaired. Some patients may have some psychological concerns to undergo cranial repair surgery. For example, some patients with cranial defects may worry about the risk of cranial repair surgery. Cranial repair surgery is a relatively very safe surgery with little risk. Cranial bone repair does not involve brain tissue at all, nor brain blood vessels, but only the repair of the defective bone window, so it is very safe. The latest cranial repair material now in use, polyether ether ketone (PEEK for short), is a bionic material that is safer than ordinary titanium mesh materials for cranial repair. This PEEK material can be highly compatible with autologous cranial bone and has comparable properties to autologous cranial bone in terms of elasticity, heat transfer, stiffness, and stability, especially for pediatric patients, and can better accommodate the growth and development of autologous cranial bone.