The skull is the skull, and it is a barrier to the brain, protecting the intracranial tissues from external disturbances. However, there are too many factors that can lead to cranial defects in real life. Once a cranial defect occurs, the protective barrier of the brain is damaged and the life activities in the cranium will not function normally, so patients cannot be careless. Cranial defects should be actively treated, and cranial repair surgery is clinically adopted for treatment, which is a routine surgery in neurosurgery. The purpose of treatment is to reshape the anatomical structure of the skull and restore a stable cranial cavity environment, which also plays a positive role in repairing neurological damage. Nowadays, many hospitals can do skull repair surgery, but the difference lies in the use of skull repair materials, most hospitals are currently using titanium mesh material, which is really a lot more advanced than the various materials in the early days, but there are also some defective problems, such as the chance of infection and rejection after surgery, which will affect the post-operative medical examination, and even the situation of material exposure, etc. How does 3d technology repair skull look like? peek material with the help of ct data display results to carry out three-dimensional reconstruction design, and then through 3d printing technology to produce a more consistent with the structure of the autologous skull repair plate, highly restore the anatomical structure of the skull, and it can also be personalized according to the situation of different patients with skull defects shaped, and achieved good clinical treatment results.