Cranial defect is a common disorder. Although the skull is one of the hardest bones in the human body, some people still suffer from cranial defects for one reason or another. For example, falling objects, production safety accidents, cranial surgery, etc. may cause cranial defects, which may lead to cranial repair surgery. Some patients are concerned about the cost of the surgery and ask how much a skull repair costs. The cost of the surgery is closely related to the material used for the repair, as good materials are more effective and provide better post-operative recovery, and the cost may be slightly higher. For example, our team currently uses an advanced polyether ether ketone material, also known as PEEK, to perform cranial bone repair, which can achieve very satisfactory results. PEEK material is much better than the titanium mesh material that was commonly used in the past. In addition, this PEEK material is a bionic bone that is highly compatible with the autologous cranial bone and has comparable properties to the autologous cranial bone in terms of elasticity, heat transfer, hardness, stability, etc. The cranial anatomy is highly restored, with few complications and basically no rejection and no impact on future medical examinations.