Cranial repair is a routine neurosurgical procedure and the technique is now more mature, so in principle the risks are not significant, but there are still risks of anesthesia, vascular injury, nerve injury, infection and rejection during the procedure. Cranial bone repair is a level 2 surgery in the neurosurgical surgery classification and is less difficult to perform. However, there is a risk of anesthesia as the surgery requires general anesthesia. Also, because of the large surgical incision, there is a greater possibility of injury to blood vessels and nerves. The special material used for cranial repair and the possibility of the body rejecting this material is also a surgical risk. When there is a cranial defect, it is recommended that cranial bone repair be performed as early as possible, provided that the original disease has recovered well. Early cranial bone repair is conducive to the restoration of normal intracranial blood flow and the recovery of neurological function, thus improving the patient’s prognosis.