Cranial bone is a very important bone tissue in human body, which plays an important role in protecting and supporting the brain and head and facial organs, and is of great significance to the life of the whole human body, so once a cranial defect occurs, it will be very harmful and must be repaired in time. Cranial defect is a common disorder in neurosurgery, and many situations in life may cause cranial defect, such as traffic accidents, production safety accidents, falling objects, and even fights, including craniotomy due to certain cranial diseases, which may cause cranial defect. In general, if the defect is more than three centimeters in diameter, has corresponding symptoms, or has an aesthetic impact, these cases should be promptly repaired. Cranial repair is a routine procedure in neurosurgery and the technique is very mature. The choice of cranial repair materials has a significant impact on the repair results. The cranial repair material widely used in most hospitals is titanium mesh material, which is not ideal and may cause postoperative infection and rejection, scalp damage, material exposure, force deformation, cold and heat sensitivity, and affect CT MRI. There is a new type of polyetheretherketone peek material with excellent performance. This is a special polymer material, its various properties are very close to human autologous cranial bone, which well overcome the above-mentioned problems that may arise from titanium mesh material, and the effect is also very outstanding in clinical application. Then the material peek for cranial bone repair surgery is there domestic? At present, the raw materials of polyetheretherketone peek material are imported from foreign countries, and then shaped and made in China. From Shanxi, 18-year-old boy Zhang caused a serious cranial defect because of a car accident, his family brought the patient to us after many understandings, and our team performed peek cranioplasty to achieve a good repair effect, the skull was restored to complete closure, and his mental state was greatly improved, the patient and his family were very satisfied. Our team widely carries out peek skull repair and plastic surgery, using peek material with excellent performance, and constantly carries out technical innovation and upgrade, and also innovatively introduces the concept of cosmetic plastic surgery to ensure the aesthetic appearance while completing skull repair, so as to achieve the triple effect of anatomical integrity, functional perfection and aesthetic appearance, which is unanimously recognized and praised by the majority of patients with skull defects and their families. It has been recognized and praised by the patients and their families.