When a patient has a sudden cerebral hemorrhage, if emergency treatment is not performed in time, cerebral edema may occur and the situation may be life-threatening in serious cases. At this time, in order to provide first aid, patients will be decompressed by debridement, which can play a role in reducing intracranial pressure and stopping more danger. In fact, besides cerebral hemorrhage can cause cranial defects, various accidents and disasters occur frequently in today’s society, as well as various cranio-cerebral surgeries, which may cause cranial defects, and cranial defects often bring some problems to patients physically and psychologically. Effects of cranial defects on patients: According to the survey, on the one hand, the appearance of patients with cranial defects is seriously damaged, resulting in low self-esteem. On the other hand, without the protection of the skull, patients have to be careful in everything, especially insecure. In addition, brain tissue is vulnerable to secondary damage, which may lead to abnormal cerebrospinal fluid circulation and blood supply disorders. Thus, cranial defects can bring great impact on the normal life of patients. Most patients will actively seek materials and hospitals for repair after skull defect, which is very worth advocating. It is generally recommended that patients should go to regular hospitals for skull repair surgery in time when the diameter of defect is larger than 3 cm after 2-3 months of debridement surgery. Treatment: Cranial repair surgery is a routine operation of neurosurgery to remedy cranial defects with a medical material, aiming to repair the defect area, restore the integrity of the skull and improve the patient’s self-confidence. Secondly, it increases the safety of the patient and promotes the recovery of neurological function. The specific effect of skull repair surgery is mainly determined by the repair material, such as titanium mesh, which may cause rejection or infection in patients after repair, and may also cause deformation and collapse and material exposure, so it is obvious that this repair material has many disadvantages and is not suitable for patients to repair. The peek cranioplasty, which is formed by using peek as the implant material and adding the concept of plastic surgery, effectively avoids many phenomena caused by titanium mesh covered repair and has a natural and beautiful appearance after surgery.