Cranial bone repair surgery has brought a gospel of recovery to the majority of patients with cranial bone damage. With the development of science and technology, more and more new materials are used in skull repair surgery, replacing traditional materials little by little, which are highly favored by countless patients. Patients with skull damage in general are heavily burdened with the thought. “If the bone window is missing, will it be infected to the brain tissue” “Is it that you can’t shake your head and brain”. These concerns are normal, and if cranial bone repair is not performed in a timely manner or improper repair materials are chosen, it may cause the patient’s fears to become reality. For the safety and health of their own brain tissue, many patients choose the most current PEEK as the surgical material for skull repair. Even though there are many successful cases, patients are concerned that PEEK is really that good of a material. The answer is undoubtedly that PEEK can be customized in three dimensions to fully restore the anatomical structure of the skull, and that PEEK is a bionic bone that is highly compatible with autologous cranial bone and is comparable to autologous cranial bone in terms of elasticity, heat transfer, hardness, and stability, allowing it to adapt to the growth and development of autologous cranial bone.