In neurosurgery, cranial defects are very common, such as falling objects, large traffic accidents and after some cranial surgeries, which may leave cranial defects. Cranial bone is an important protective barrier of the brain, once the skull is damaged, the skull shape becomes unattractive, and over time, it will also add a burden to the patient’s psychology and make the patient become very unconfident. Of course, the effects of skull defect are not only these, the intracranial environment and intracranial pressure will become very unstable after skull defect, the brain blood circulation and cerebrospinal fluid circulation will be affected, thus bringing a series of discomfort symptoms to the patient’s body, such as dizziness and headache, numbness and weakness of the limbs, emotional depression and irritability, and in serious cases, epilepsy will be induced. The danger of cranial defects cannot be underestimated, and timely cranial repair surgery in hospital is the key. However, the success of cranial repair surgery depends on many factors, including the choice of repair materials, the skill level of the specialist and the post-operative care. At present, many hospitals use titanium mesh material for skull repair surgery, which is a kind of metal material. Although it has certain progress, it also has many shortcomings, such as postoperative infection and rejection, abrasion of scalp, cutting pain, affecting CT magnetic resonance examination, and even the risk of material exposure, etc. At this time, it is necessary to take out the titanium mesh and reschedule the surgery. surgery. Where can a failed skull repair be repaired and reshaped? Our team can. We use a new PEEK material to carry out the surgery, and we have introduced the concept of aesthetic plastic surgery to carry out comprehensive PEEK cranial repair plastic surgery with a natural recovery after surgery; we can also successfully revise and re-repair for good repair plastic surgery for patients after failed repair.