It is not easy to live a peaceful life, and we are constantly exposed to various dangers from outside. For example, various traffic accidents, production safety accidents, falling objects, and various cranial disorders, all of which may cause cranial defects. Once the cranial defects, it will cause great damage to the body. Patients with cranial defects may suffer from local scalp subsidence due to atmospheric pressure, which may lead to intracranial pressure imbalance, brain tissue displacement, as well as reduced blood flow to the cerebral hemispheres and disturbance of cerebrospinal fluid circulation, resulting in a series of clinical manifestations, mainly including: headache, dizziness, irritability, epilepsy, unexplained discomfort and various mental disorders. Therefore, prompt cranial repair is required. Some patients are concerned about how long they will be hospitalized and how soon they will be able to get out of bed. There is no need to worry about this, as skull repair is a relatively routine and common procedure in neurosurgery, and the technology is very mature. The general hospital stay is about ten days, and the patient can get out of bed in two days after the surgery. What patients and their families should be more concerned about is the choice of cranial repair materials, because different repair materials have a great impact on the repair effect of the skull and the recovery of the patient after surgery. At present, the ideal cranial repair material is polyetheretherketone PEEK. PEEK is histocompatible, chemically stable, and has a modulus of elasticity similar to that of cortical bone, so it will not depress or deform even after a collision, which can protect patients after craniotomy.