The cranium is located at the top of the human skeletal system, above the spine, and consists of 23 flat and irregular bones of different shapes and sizes, making it a relatively sophisticated and complex set of bone tissue. The skull provides a solid protective barrier for the organs of the head and face, especially the brain, and guarantees the normal functioning of all life activities. The skull is not indestructible, but it is also exposed to many dangers from the outside world, which can often lead to cranial bone loss. The lack of skull bone is a great danger, first of all, there is no hard protective barrier, the soft tissues in the skull are easy to suffer from external injuries, if the outside world sharp attack, and may even be fatal; secondly, it will seriously affect the appearance of the skull; and is the rapid change of the intracranial environment will affect the cerebral blood circulation, the cerebrospinal fluid circulation and cerebral neural function of the operation of the brain, a series of syndromes. In addition, patients have fear of pulsation, bulging and collapsing of the defect area, as well as fear of the sun, fear of vibration and even fear of noisy sounds. It may also cause inattention, memory loss, and some patients show depression, fatigue, reticence, and low self-esteem. That is why cranial bone repair is needed in time after cranial defects. In cranial bone repair surgery, the choice of repair material is very important, the current ideal when the new polyether ether ketone PEEK material, excellent performance, high postoperative comfort, strong protection. PEEK material for cranial bone repair, and constantly improve and upgrade the technology, currently has four technological innovations, pioneered the unique thickness of the material and mesh aperture design and a unique tissue separation and reset. The unique design of material thickness and mesh aperture and the unique tissue separation and restoration technology can increase blood flow, effectively avoid temporal muscle atrophy, ensure the activity of all tissues, and achieve better cosmetic effect. Polyetheretherketone PEEK material cranial bone repair surgery, achieved outstanding clinical results.