Cranial repair is the removal of a patient’s bones after surgery to save the patient’s life because of a life-saving surgery or some special situation that was needed at the time. The professional term for its repair is called cranioplasty. Cranial repair is mainly made of exotic metal, customized according to the size of the defective skull, through 3D printing technology, similar to the original shape of the skull. The skull is separated and isolated, and then covered directly under the scalp, allowing the skull to be repaired to achieve a cosmetic effect. After the skull repair, it can reduce the patient’s headache and dizziness, and it can also reduce the patient’s serious fear caused by the skull defect, and even some patients are reluctant to see others after the skull defect, and this kind of fear can also play a protective role.