Cranial bone is a very important group of bone tissue in the human body, which plays a very important role in protecting and supporting the brain and head and facial organs, and is very important for the life of the whole body. Cranial repair is a routine procedure in neurosurgery and the technique is very mature. Some patients ask what to pay attention to before cranial repair surgery. One of the first issues to pay attention to is the choice of cranial repair material. Because what kind of repair material is used has an important influence on the result of skull repair. Although this material is advanced compared with the previous more traditional materials, there are still some defects and shortcomings, such as post-operative infection and rejection, scalp breakage and material exposure; the material is not insulated and may be sensitive to the external hot and cold environment and produce discomfort; titanium mesh is a metal material, which may affect the patient’s ability to receive CT and MRI examinations; and the material is not insulated and may be sensitive to the external hot and cold environment and produce discomfort. CT and magnetic resonance examination; there is also titanium mesh this metal sheet hardness is not very good, it is easy to be hit by external forces, it is easy to deformation, resulting in scalp collapse and other problems. Therefore, titanium mesh is not a very ideal material for skull repair. At present, the more advanced cranial repair material is polyether ether ketone peek material, which is a new type of special polymer material, applied in the cranial repair surgery, the effect is very ideal. The material of polyether ether ketone is very close to human cranial bone: high hardness, not afraid of external impact, no deformation and collapse; good histocompatibility, usually no infection and rejection; strong heat insulation, not affected by the external hot and cold environment and sensitive discomfort; in addition, this material will not affect the patient to receive CT nuclear magnetic examination; this material is three-dimensional shaping, according to the patient’s This material is three-dimensional shaping, according to the patient’s cranial structure for personalized three-dimensional design, can highly restore the skull structure, tightly repair the upper defective area; this material is embedded repair, repair the surface smooth articulation, will not produce wear and tear on the scalp. Therefore, due to its excellent performance, polyetheretherketone peek material has now become the new trend of cranial repair material, which is favored by neurosurgeons and the majority of patients.