There are always many accidents in life that can cause injuries to our head. After surgery, a defect is formed in the skull, and many patients are very afraid, both of the dangers of not repairing it and of the risks involved in the repair surgery. In fact, cranial repair is just a routine procedure in neurosurgery to achieve coverage of the defect, and there is almost no risk of failure. The most important thing is the choice of repair material if the patient wants to better achieve the purpose of the surgery. It is believed that the priority choice of many hospitals is titanium mesh, as the most widely used cranial repair material nowadays, although the price is easy for the public to accept, it is not a better repair material, some patients have different degrees of rejection after using titanium mesh, and even have the phenomenon of titanium mesh leakage. Currently, the introduction of a new material polyetheretherketone, commonly known as peek material, has brought good news to many patients with skull defects. Speaking of its advantages compared to titanium mesh, in addition to the price is slightly more expensive than titanium mesh, the rest of the convenience are more outstanding, peek material is strong insulation, the patient’s repair will not have any feeling because of the change of the weather environment; it has excellent mechanical properties, strong impact resistance, can effectively protect the human brain tissue; from the point of view of cosmetic appearance, peek material is based on the patient’s brain CT data for design, using 3D printing technology to produce a skull that perfectly matches the bone window; as a non-metallic material, it has stable performance, can be repeatedly autoclaved, and there is no risk of surgical infection, thus reducing the occurrence of complications. Therefore, skull repair with peek material is a good choice for many people.