Cranial defects are a common occurrence and can be caused by a variety of factors, from small fights to traffic accidents and craniotomies. Patients with cranial defects need to be repaired as soon as possible because the skull plays a strong role in the protection of the brain and other head organs, and also contributes significantly to the overall aesthetics of the skull and nerve recovery. Cranial repair surgery has been developed through the ages and perfected by medical experts. After cranial bone repair surgery, it can make the patient’s intracranial pressure return to normal and stable state as soon as possible, reduce the daily drastic changes of brain pressure caused by the cranial bone defect, and the continuous and serious damage to the brain and its function, in addition to restore the skull integrity and enhance the patient’s external image. In fact, the cost of skull repair surgery is influenced by many factors, such as the area of defect, surgical method, hospitalization fee, post-operative care fee, etc. Among them, the surgical method occupies a greater weight on the overall post-operative repair effect, and the superior surgical method, which only requires a one-time repair, can allow the patient to recover. Like titanium mesh cranioplasty, which is widely used in some hospitals, there are many drawbacks, such as possible post-operative rejection infection and material exposure, which requires patients to undergo another repair, which is a major nuisance to patients. With peek cranioplasty, ideal repair results can be achieved. This surgical repair + plastic composite procedure accomplishes both needs of the patient on one surgery, and the overall image of the patient is good and natural after surgery. In addition, this procedure uses peek as the implant material with good results.