Cranial As medical knowledge has become more widespread, many people have a whole new understanding of cranioprosthetic surgery. Cranioplasty is no longer a procedure that is considered to be rare. Every year, a large number of patients need to undergo cranial bone repair surgery for a variety of reasons. Most modern hospitals perform cranial bone repair, and the more widely used material is mostly titanium mesh material. This titanium mesh material inevitably has some problems, such as sensitivity to hot and cold reactions, chronic pain, and postoperative effects on medical examinations. In fact, many people do not know that in addition to titanium mesh, there is now a more advanced cranial repair material – polyether ether ketone, also known as PEEK. Compared to the traditional titanium mesh material, the cost of repairing the skull with this PEEK material is a little higher. However, this material has unparalleled advantages. The material can be reconstructed in three dimensions based on the patient’s cranial CT data, completely restoring the physiological structure of the skull curvature and so on, and can be tightly sutured to the defect area with excellent repair results. We have used this material to repair many patients with cranial defects, and we have achieved very good repair results, and there is basically no adverse reaction after surgery.