Cranium is a hard and indispensable bone in human body, which plays a pivotal role in the normal operation and health of human life activities. When external factors or cranial lesions occur in the cranium itself, it will cause cranial defects, break the normal life trajectory and reduce the quality of life. When cranial defects occur, it is obvious that the patient’s appearance will be seriously damaged, some will be collapsed, some will be bulged, no matter which one it is, it will make the patient become less confident and have a deep sense of inferiority; in addition, without the protection of the skull, the brain tissue is easily damaged, which will easily lead to abnormal cerebrospinal fluid circulation and blood supply disorders. The main purpose of the surgery is to replace the defective cranial bone with a material similar to human autologous cranial bone, to repair the bone window of the defective part, to realize the integrity of the cranium again, to restore the confinement of the cranial cavity, to keep the physiological intracranial pressure stable, to reduce the occurrence of cranial defect syndrome; through the defect repair, to achieve the symmetry of the head shape Through the defect repair, the head shape is symmetrical, the appearance is natural and beautiful, and the patient’s inner confidence is improved. In the neurosurgical guidelines, generally 3 months after debridement surgery, the defect diameter is greater than 3 cm, which is in line with the indications for surgery, and the patient needs to be repaired in time. Currently, a new peek material is used clinically to do skull repair plastic surgery, which uses new peek as the skull repair implant material, greatly reducing the postoperative rejection rate and infection rate; at the same time, the embedded repair method is used to effectively avoid skin wear and ulceration and material exposure caused by traditional titanium mesh covered repair; in addition, the innovative introduction of plastic surgery concept, combined with the unique mesh aperture design and intraoperative In addition, the innovative introduction of the concept of plastic surgery, combined with the unique mesh aperture design and unique tissue separation and reset technology, effectively avoid temporal muscle atrophy, to ensure the activity of the tissues, to ensure that the postoperative head symmetry, to achieve a natural and beautiful appearance.