The human skeletal system is very large, and each bone has its own important role, such as the skull, which is like a protective shell for the brain, maintaining a stable cranial cavity environment, to better ensure that all intracranial life activities can operate normally. However, the problem of cranial defects often occurs in the clinic, which will inevitably have a certain impact on the health of the body, in particular, the intracranial pressure will become very unstable after the cranial defects, the cerebrospinal fluid and blood circulation will be affected, and it will also hurt the brain and nerve function, making the patient’s body appear a variety of uncomfortable symptoms. Moreover, after cranial defects, the patients have a lot of mental and psychological pressure, and they do not have a sense of security at all, and if they are accidentally re-injured, it will lead to a greater danger. Therefore, after the occurrence of cranial defects patients should pay attention to, do not take a chance that it will grow well by itself, only go to the hospital early for treatment and repair is the key. What is the best time for cranial repair? Cranial bone repair surgery does need to pay attention to the timing, under normal circumstances, the patient’s wound cleaning is relatively good and there is no intracranial hypertension can be a one-stage cranioplasty, but if because of severe closed cranio-cerebral trauma to do the decompression of the large bone flap and the skull defect, it is recommended that the operation is carried out in about 3 months after the operation. However, in order to improve the success rate of cranial repair surgery, the choice of cranial repair material is also very critical. The polyether ether ketone peek material used by our team is very ideal, which is a very advanced special polymer material with high strength, good thermal insulation, and good tissue compatibility, and basically will not have any problems after surgery. And we continue to improve and upgrade the technology and material optimization design, and the introduction of cosmetic plastic surgery concepts, comprehensive carry out peek cranial bone repair plastic surgery, making the postoperative effect more natural and beautiful.