Cranial defects are a relatively common disorder, and there are many risk factors in life that may threaten the skull. For example, traffic accidents may cause severe cranial injury, or direct cranial destruction, or cranial defect due to intracranial hematoma, intracranial hypertension, etc., which necessitates debridement and decompression surgery. In addition to traffic accidents, production safety accidents are also a factor, and a significant percentage of patients suffer from cranial defects due to intracranial lesions and craniotomy. Cranial defects can cause a lot of damage to the body and lead to a series of cranial defect syndrome, so cranial repair surgery is needed in time. For the price of cranial repair surgery, cranial repair surgery is a relatively routine surgical procedure, and the cost is mainly related to the cranial repair materials used. For example, the titanium mesh material currently on the market, although the cost may be slightly lower, but there are still some problems, such as titanium mesh is a metal material, not insulated, which will lead to the patient’s sensitivity to hot and cold reactions after surgery; covered repair, the edge of the titanium mesh will cause cutting injury to the scalp and produce pain; in addition, this material will also interfere with CT nuclear magnetic examination and other examinations, and the shaping effect is not good. Therefore, titanium mesh is not the ideal material for skull repair. Patients may consider polyetheretherketone, also known as PEEK, which is an advanced material for skull repair. PEEK is a special polymer material with good biocompatibility, complex shaping, excellent mechanical properties, good protective properties, and high postoperative comfort, and is becoming a new trend in cranial repair materials.