Cranial repair is indicated for skull defects left after craniocerebral trauma or hypertensive cerebral hemorrhage decompression surgery. However, there are some advantages to perform cranial defect repair early. 1.Restore the original shape of the cranial cavity as soon as possible, which is beneficial to restore the normal intracranial pressure and brain physiological function. 2.Prevent brain tissue displacement from pulling and distorting cerebral blood vessels, causing brain tissue ischemia and necrosis, thus reducing the further aggravation of cerebral nerve dysfunction in the cerebrovascular supply area. 3.Prevent cerebrospinal fluid circulation obstruction caused by brain tissue displacement, which induces subdural fluid accumulation on the opposite side of the defect or longitudinal fissure. 4.Early restoration of cranial shape can not only relieve or eliminate the headache, dizziness, memory loss and other complications caused by cranial defect, but also relieve the patient’s anxiety or fear in time. 5.For those who complete cranial repair and ventriculo-abdominal shunt at the same time, it can reduce the risk and incidence of surgical injury and sequelae caused by the increase of surgery and anesthesia, as well as reduce the mental and economic burden of patients and their families. 6. The earlier the operation time is, the smaller the scar formation at the incision and the lighter the adhesions are, the easier it is to separate during the operation, thus achieving the purpose of less bleeding, shorter operation time and lower cost. The treatment of cranial defects is to perform cranioplasty, but the timing, method and materials used, as well as the indications and contraindications for surgery must be carefully considered. This must be well communicated with the surgeon before surgery, for example, some female patients, who need more postoperative aesthetic problems, are recommended to use polyether ether ketone (peek) material as the first choice of repair material. This is because peek material cranial repair plastic surgery in surgery using embedded repair, smooth articulation, high comfort, effectively avoid wear skin, material exposure and other problems, in addition, our neurosurgery after years of clinical summary, in the three-dimensional design of the unique material thickness and mesh aperture design and intraoperative unique tissue separation reset technology, effectively avoid temporal muscle atrophy, to ensure the activity of the tissues, can effectively ensure the overall postoperative shape. It can effectively ensure the overall beauty of the postoperative appearance.