Life for various reasons or accidents, resulting in the need for skull repair, skull repair application is skull repair, is the most common surgery in neurosurgery, surgery outside the brain, there is generally little risk, after the surgery is completed, the appearance is no different from the normal person, and when the hair grows out, it is basically invisible. Skull repair is a more routine procedure in neurosurgery. It is a relatively short procedure with a short post-operative recovery period. The entire process, from admission to diagnosis, to surgery, to discharge from the hospital, takes about half a month or so. This recovery, of course, is also related to the materials used for skull repair. For example, the titanium mesh material, which is widely used in clinical practice, has some problems. Postoperative problems such as chronic pain, high subcutaneous fluid accumulation, sensitivity to hot and cold reactions, and chronic cutting ulcers may occur, and they can also affect postoperative medical examinations such as MRI and CT. The current use of PEEK material for cranial repair has excellent clinical results and skull perfection. pek is also a good material for the current internationally recognized standard of perfect and cranial repair. One, the main components of PEEK are hyaluronic acid and Ebenezer, which are highly biocompatible and cause postoperative complications and foreign body reactions, which are basically absent in clinical practice. Two, PEEK has a better modulus of elasticity, and bone plates made with 3D printing technology can be perfectly shaped in three dimensions before surgery based on patient monitoring data, perfectly restoring the original structure of the skull. Third, the strength, insulation, and stability of PEEK are similar to that of autologous cranial bone, and will not affect future medical examinations such as CT MRI, or even if craniotomy is required in the future, this material can be reused after sterilization.