In order to avoid headaches, dizziness, nausea and vomiting, or extreme lack of confidence and depression due to cranial defects, more doctors now believe that the earlier the cranial defect is repaired, the better. The more doctors now believe that the sooner the skull is repaired, the better, and advocate that patients with cranial defects be allowed to return to their normal lives as soon as possible without having to worry about scaring people with a collapsed or bulging head. I heard that many hospitals recommend titanium mesh as the repair material, and with the developed network today, many patients will consciously go online to search for it first, and when they learn that titanium mesh may have side effects, they have a little concern inside. From the current point of view, titanium mesh is not as hard as the new polyether ether ketone material, it is not able to protect the brain tissues well, while polyether ether ketone material, commonly known as peek material is not only excellent in terms of hardness, other properties are very good. For neurosurgery, skull repair is a very routine surgical procedure, and repairing the skull with peek material is an embedded procedure, which is done by precisely replicating the defective area of the head, and then using 3D printing technology to perfectly replicate the defective skull to the extent that it fits perfectly with the edges, and the patient will basically not have edge wear after using it. Peek material has a very high impact resistance and can protect the brain tissue from the external environment. Currently, more and more patients with skull defects are choosing to repair with peek.