The skull is an important human tissue, which not only maintains the integrity of the head and face shape, but also is an important barrier connecting the skull and brain to the outside world. Cranial defects are mainly common after various traumatic injuries and debridement decompression, such as accidents, falling objects, cranial surgery, etc. If the skull defect area reaches 3*3cm or more, skull repair surgery must be done, only then can more injuries and complications be avoided in time. However, many patients do not know much about cranial repair surgery, such as the materials for repair, the full cost of cranial repair surgery and other issues. Cranial repair surgery is a common surgical procedure, and the cost of repair surgery is related to the examination fee, hospitalization fee, material fee and surgery fee. The purpose of the surgery is to take the repair material to make a good repair to the defective area. Titanium mesh is currently used as a common cranial repair material, its price is not high, but there are great defects and poor postoperative results, so cranial repair still needs to choose a good repair material. With the progress of modern technology, polyetheretherketone peek material has become the ideal choice for skull repair surgery, although the price of this material is a little more expensive, but the effect is very superior. At present, individual hospitals adopt polyetheretherketone peek cranial repair material as the cranial repair implant material, while introducing the concept of plastic surgery, based on 3D printing, to develop personalized peek cranial repair plastic surgery program for different patients, to reduce postoperative complications while achieving the appearance of repair plastic beauty.