At present it seems that cranial bone repair is a very important thing, is based on a variety of reasons caused by cranial defects and repair an important measure, in ordinary times people are not easy to find, but it will become more and more serious, then cranial bone defects one year after the repair can be? The next step is to give you a detailed introduction. Cranial defect is a relatively common craniocerebral disorder, every year in our country there are a large number of people because of such and such reasons (car accidents, falling from height, cranial surgery, etc.) and lead to cranial defects. Cranial defects will bring serious harm, the lack of a hard shell protection, intracranial tissues will be susceptible to external direct injury; in addition, the lack of a part of the skull, destroying the closed cranial cavity environment, intracranial pressure is not stable, intracranial blood circulation, cerebrospinal fluid circulation, etc. are affected, which can lead to a series of neurological deficits; incomplete cranial appearance, but also on the patient’s psychological trauma, self-absorption, Low self-esteem, and even some patients have a tendency to depression, or worse, anorexia. Therefore, once cranial defect occurs, cranial bone repair should be carried out in time to solve the problems of lack of effective protection of brain tissue, blood supply obstacle, cerebrospinal fluid circulation abnormality in the defective area, to repair the intact cranial shape, and to restore the patient’s self-confidence. The timing of cranial bone repair surgery is very important, and it is possible to repair a cranial defect after one year. Generally speaking, cranial defects should be repaired within 3 months, and if it has been more than a year, it is even more important to carry out cranial repair surgery as soon as possible to avoid more adverse symptoms. In addition, the choice of material for cranial bone repair is also very important. At present, there is a very advanced material called polyether ether ketone, also commonly known as PEEK material. This is a special polymer material, its properties are very close to the autologous skull, good biocompatibility, able to complex shaping, excellent mechanical properties, good protective properties, and gradually become the trend of cranial bone repair materials.