The significance of skull repair: The skull, as the protective shield of human brain, assumes the most important responsibility for life activities. According to statistics, there are more than 3 million patients with cranial defects due to traffic accidents and accidents every year, and cranial defects are the more common sequelae of post-injury and post-operative patients with craniosynostosis. As the brain tissue loses the shielding effect of normal skull and is easily injured twice, and the skull defect can cause various symptoms and affect the appearance, it is often necessary to perform skull repair and shaping to restore the normal stable state of intracranial pressure as soon as possible and reduce the continuous severe damage and functional effects on the brain due to the daily drastic changes of brain pressure caused by the skull defect.