At present, patients with cranial defects include some children, and cranial defects in children not only affect the children’s appearance and psychology, but also have a certain impact on the children’s development, as parents must pay great attention. Generally speaking, after the child reaches the age of three years, it is possible to do cranial repair surgery, because the growth of the cranial part of the child will become very slow after the age of three years, and at this time the cranial bone grows along the bone joints, and there will be no change in the size of the window of the bone. It is important to know that children are already more active, and their sense of self-protection is not very strong. Long-term cranial defects are very easy to be injured again, and can also cause neurological damage to the child, so it is still necessary to do cranial bone repair surgery as soon as possible. There are quite a few places that can do cranial repair surgery, but one thing must be recognized, the use of cranial repair materials is a direct impact on the effect of the surgery. Therefore, when choosing a hospital for the surgery, you must know clearly what materials are used for the surgery. It is understood that titanium mesh material is still used in many places for repair surgery. Titanium mesh material than earlier traditional materials, especially some progress, but there are also many problems, patients will have different degrees of infection and rejection after surgery, and some patients have the phenomenon of material exposure. The current clinical introduction of a new type of polyether ether ketone PEEK material, peek material has the advantages of other materials can not be compared, hard and elastic, high temperature resistance, high impact resistance, biocompatibility is also very good. We have used peek material for many patients to repair the defective skull, and the postoperative effect is very remarkable. And constantly improve and upgrade the technology and material optimization design, can effectively increase blood flow, maintain tissue activity, prevent temporal muscle atrophy, and the team also introduced the concept of cosmetic plastic surgery, so as to comprehensively carry out the PEEK cranial bone repair and plastic surgery, to achieve anatomical restoration, functional perfection, the organic unity of the appearance of the aesthetics.