Cranial repair surgery has become a common procedure in neurosurgery, and for cranial repair surgery, the repair material is very important. A good material can not only improve the success rate of the surgery. And it can reduce the chances of postoperative production. Thousands of years ago, there were doctors tried to use various materials for cranial repair, limited to the backward medical cognition and technical means at that time, there were no suitable materials for doctors to choose. With the advancement of medical science, more and more materials for cranial repair have gradually become available for use. Plexiglass, light apatite and calcium phosphate cement materials, which were once used in clinical practice, were gradually withdrawn from the medical arena due to their poor clinical results. The commonly used material for cranial repair today is titanium mesh, which is also a quality material with a long history of application and better results. However, the metallic property of titanium mesh often brings the consequences to patients such as sensitivity to cold and heat reactions and CT image errors. The current clinical introduction of a new type of cranial bone repair material, the material is polyether ether ketone peek material, which is a polymer biomaterial, in terms of elasticity, heat transfer, hardness, stability and other aspects of the human cranium is extremely close to the use of three-dimensional shaped PEEK bone plate, and cranial bone structure can be completely fit, do not have to worry about the accuracy and aesthetics of the problem. Numerous clinical cases have shown that no discomfort has been found with PEEK cranial repair materials, so PEEK is the better material for cranial repair.