The skull is a very important organ in the human body, which plays an important role in protecting brain tissue and maintaining normal intracranial pressure, however, there are still some people who suffer from skull defects for various reasons. However, there are still some people who have skull defects due to various reasons. Therefore, skull repair surgery should be performed as soon as possible. In fact, in today’s developed medical environment, cranial repair is already a relatively routine surgery in neurosurgery, which is not complicated and not very difficult, so it is not a big surgery. However, the material used for cranial repair is very important. Although the titanium mesh material, which is widely used in clinical practice, is much more advanced than other traditional materials, there are still many problems or complications that can affect the outcome of the repair and restrict the quality of life of the patient. The entire procedure is short and the postoperative recovery period is not long. From admission to diagnosis, to surgery, to discharge from the hospital, the whole process takes about half a month. 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, more subcutaneous fluid, 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. PEEK is currently internationally recognized as a good material for perfect and cranial repair standards. the elastic modulus of PEEK is good, and the bone plate made by 3D printing technology can be perfectly shaped in three dimensions according to the patient’s monitoring data before surgery, perfectly restoring the original structure of the skull; strength, insulation, and stability are similar to autologous cranial bone, and will not affect future medical examinations such as CT MRI, or even If craniotomy is needed in the future, this material can be reused after sterilization. It is very effective in restoring the skull to integrity after the repair surgery. After the skull repair surgery treatment must be carried out in a regular hospital can not be delayed, early treatment can be early recovery.