With the number of cranial defects increasing each year, more and more people are choosing to restore the integrity of the skull, restore a safe and stable environment within the skull, and improve the aesthetic appearance through cranial repair. Cranial repair is a surgical procedure performed by neurosurgery to repair skull defects caused by various reasons, and the technique is relatively mature and safe. If a patient does not have a skull defect repaired in time, he or she is always at risk. It is very easy to be injured by external attack, which is very dangerous and sometimes may even be fatal. Cranial defect may also cause unstable intracranial pressure, the cerebrospinal fluid circulation and blood circulation in the skull are affected, the neurological functions and life activities cannot function normally, and may cause cranial defect syndrome. Most patients also suffer from long-term depression due to the unattractive appearance of the skull. Patients who have undergone cranioplasty have a new cranial bone, which restores the original appearance of the skull and improves the appearance of the skull. In addition, a complete cranial bone can play a strong role in protecting the brain and soft tissues inside the skull by rebuilding a closed and stable cranial cavity environment and ensuring the good operation of intracranial blood circulation, cerebrospinal fluid circulation and various neurological functions. As a major factor affecting the postoperative effect of cranial repair, it is very important to choose the right material. For example, some local hospitals use titanium mesh material for cranial repair, and sometimes there are uncomfortable symptoms. For example, the titanium mesh is not insulated and may cause headache and dizziness in hot and cold environments; the titanium mesh overlay repair may cause cutting damage to the scalp at the edges of the material; and the histocompatibility of the titanium mesh is not very good and may cause rejection or postoperative infection, or even scalp tissue destruction, resulting in exposed titanium mesh. If a patient has an exposed titanium mesh, it is recommended to go to the hospital as soon as possible for detailed examination and symptomatic treatment. If necessary, the titanium mesh can be surgically removed and replaced with peek material, which has properties very close to the human skull and is significantly better than traditional titanium mesh.