Cranial repair is a routine procedure in neurosurgery to repair cranial defects due to various reasons, with the aim of restoring the closed cranial cavity of the skull, restoring a normal and stable cranial environment, and ensuring the normal functioning of all neurological functions and life activities. Cranial repair is a procedure with a very long history, having been practiced by our ancestors thousands of years ago. After a long period of development and historical evolution, in modern medical conditions, cranial repair is a relatively routine procedure, very mature and widely performed. One of the factors that have a significant impact on the outcome of the repair is the choice of cranial repair materials. The traditional materials such as plexiglass, bone cement, silicone, etc. are no longer used in clinical practice because of various defects. At present, most hospitals use titanium mesh material for cranial repair, but this material has certain defects, such as postoperative infection and rejection, hot and cold sensitive reaction, easy to deformation by force, and affect the CT magnetic examination and other problems. Now there is a more advanced material called polyetheretherketone peek material, some patients ask peek skull is bionic bone? The peek material is a new type of special polymer material with excellent performance, which overcomes the problems that may arise from the titanium mesh material and can be used in cranial bone repair to achieve excellent repair results. peek material is very close to the human own cranial bone in terms of hardness, elasticity, heat insulation, histocompatibility, plasticity, etc. At the same time, it can also be customized to the shape and structure of the patient’s skull and can be shaped in three dimensions to highly restore the appearance of the skull. Our team is widely using this advanced material for skull repair surgery and has achieved very good results in clinical practice, which has been well received and recognized by patients and their families. The team not only uses this advanced material, but also constantly carries out technical innovation and upgrade, optimizes the design of the material and adds the concept of aesthetic plastic surgery, so that the peek cranioplasty can achieve the organic unity of beautiful appearance, perfect function and structural integrity, and the effect is very outstanding.