The average patient with a damaged skull has a heavy burden of thought. “If the bone window is missing, will it get infected to the brain tissue” “Is it impossible to shake the head”. These concerns are normal, and if cranial repair is not performed in a timely manner or if the repair material chosen is not appropriate, it can cause the patient’s fears to become a reality. In consideration of the safety and health of their own brain tissue, many patients choose the current advanced PEEK as the surgical material for cranial repair. Even though there are many successful cases, patients cannot help but worry. PEEK material can be customized in three dimensions, which can completely restore the anatomical structure of the skull. In addition, this PEEK material is bionic bone, which can be highly compatible with the autologous skull and has comparable performance with the autologous skull in terms of elasticity, heat conduction, hardness, stability, etc., which can be better adapted to the growth and development of the autologous skull. Patients from all over the country often ask the question, “Is PEEK a good material?” Many doctors explain this question by saying that it can only be said that PEEK is a suitable repair material for patients with cranial bone damage under the current medical level and technical conditions. With the development of medicine, there may be cranial bone repair materials with better performance and higher adaptability in the future.