In life, some children will be due to car accidents, impact, intracranial disease and other reasons for craniotomy caused by cranial defects. This is a very scary thing in the eyes of the child, cranial defects will have a great impact on his psychological impact, in ordinary life, there are a lot of medium cause children caused by cranial defects phenomenon. This is a very harmful thing to the child, but also parents are very worried and afraid of things. Cranial defects will have a great impact on the child’s psychology, so that he can not confidently play with children, resulting in a serious inferiority complex, which is not conducive to the healthy physical and mental development of children, in addition, a long period of cranial defects will also cause an imbalance in intracranial pressure, resulting in dizziness, epilepsy and other symptoms. Therefore, it is necessary and important to repair the skull. In Beijing, there are a lot of hospitals for skull repair, but most of them use titanium mesh as the repair material, and the choice of repair material is also an important index when choosing hospitals, the most ideal repair material should be comfortable and not have any foreign body sensation without any rejection reaction after use. However, the current titanium mesh has been shown to cause different degrees of rejection in some patients, and some patients have even experienced pain at the edges and exposure of the material. Is there not a more perfect material? In fact, some hospitals use polyether ether ketone material is a quite ideal repair material. The reason why polyether ether ketone material, also commonly known as peek material is called the most ideal material is that it has advantages that are incomparable to other materials. Its strength is very good, strong resistance to blows, can well protect the brain tissue; it has excellent resistance to high temperature, chemical resistance and fatigue resistance, biocompatibility, the human body in the use of the basic will not have a reaction, more helpful to the development and growth of children. At present, there have been many patients with cranial defects with peek material to repair the defective skull, and the surgical results are very satisfactory.