Peek material is slightly more expensive than titanium mesh, but its repair results are superior to any material currently available. Currently, it is recommended to use peek material to repair the skull in large hospitals in Beijing, to find more formal hospitals and experienced doctors. There are many patients who have had their skulls repaired with this material and have had no postoperative discomfort. Titanium mesh, which is widely used nowadays, will have different complications after some patients use it, such as local pain, sensitivity to heat and cold, affecting medical examination, and poor cosmetic effect. On the other hand, peek material has been used in surgery for more than twenty years, and the good postoperative recovery of most patients has proved the excellence of peek material. Indeed, the performance of peek material is excellent. In terms of its mechanical properties, it is extremely resistant to blows and can fully protect the brain tissue inside the skull; peek material can accurately replicate the defective part of the human skull, reconstruct the design based on CT data through advanced 3D printing technology, and accurately match with the defective area to meet the patient’s high demand for a perfect recovery of the wound; its non-metallic material is more conducive to the post-operative tracking examination, and will not cause artifacts to the results, not to mention that there will be no artifacts due to the wound. Its non-metallic material is more conducive to postoperative follow-up examination, will not cause artifacts in the examination results, and there is no headache and discomfort caused by thermal expansion and contraction; at the same time, the performance of the peek material is stable, and basically will not be infected after repeated high-temperature and high-pressure sterilization. Cranial repair with peek material is an embedded repair, unlike titanium mesh, which is an overlay repair that may bring about cutting injuries, and the appearance of the skull after repair with peek material is very smooth. Therefore, peek is the ideal material for cranial repair.