Cranial defects are now a relatively common cranio-cerebral disorder in today’s society, especially in recent years when various traffic accidents, production safety accidents, accidental injuries and other events are frequent, and the resulting traumatic cranial defects are also gradually increasing. In this case, after the occurrence of cranial defects, early and timely cranial repair must be carried out. This is because whether it is a closed craniocerebral injury resulting in cranial defects or traumatic cranial defects, early repair has a great impact on the recovery of neurological function. Timely cranial bone repair will be conducive to the recovery of neurological function; if the repair is not carried out, or not timely repair, it may cause neurological damage, some of which may be lifelong irreversible, and may even cause life-threatening injuries. Therefore, after the occurrence of cranial defects, timely cranial bone repair is very necessary. Selection of repair materials Cranial bone repair is a relatively routine operation in neurosurgery, and the technology is quite mature, and the selection of repair materials has a greater impact on the repair effect. Many traditional repair materials, such as plexiglass, bone cement, titanium mesh and other materials, there are still a lot of problems, infection, rejection occurs from time to time, and more postoperative complications. At present, polyether ether ketone PEEK material is a very advanced and ideal cranial bone repair material, its various properties are very close to the autologous skull, no infection, no rejection, three-dimensional reconstruction, 3D shaping, highly restored cranial structure, strong protection, high degree of comfort, has become a new trend in cranial bone repair materials. The benefits of early repair on the recovery of nerve function After the PEEK polyether ether ketone new material cranial bone repair, it can reshape the complete and beautiful cranial shape for the patients with cranial defects, rebuild the closed and stable cranial cavity environment, play a strong protective effect on the brain and soft tissues inside the skull, guarantee the intracranial blood circulation, cerebrospinal fluid circulation and the good operation of various neurological functions, and improve the series of undesirable symptoms caused by the cranial defect to a large extent, so that the patients will be more satisfied and more satisfied. It can also largely improve a series of adverse symptoms caused by cranial defects, so that patients can recover their health as soon as possible and resume normal life and work.