The patient, Bai, was a construction worker who accidentally fell during a high work, and his workmates rushed to call 120 emergency number and sent him to a nearby hospital for treatment, where intracranial hematoma removal + decompression with debridement flap was given under emergency care, and the operation was successful. Although the operation saved the life, but unfortunately left the skull defect, skull defect 10 * 12cm. After the skull defect, Bai often feel dizzy, feel cold head, and often shaking hands, temper also became very irritable, talk backward. The psychological impact on him is very big, he is not confident in himself at all, especially low self-esteem, has been staying at home, do not want to go out. White’s wife saw such a state of loss of confidence, day by day, a little mental energy is not, their own heart is also very anxious, very unpleasant, so want to do the skull repair surgery for white as soon as possible, to restore the skull intact. White’s wife has been constantly looking for a better place to do skull repair, but the local only titanium mesh repair material, but understand some of the defects of titanium mesh, so do not want to use titanium mesh repair. Later, after a friend introduced the Civil Aviation General Hospital neurosurgery department has a professional team of physicians using the new polyetheretherketone PEEK material, but also the introduction of the concept of cosmetic surgery, very experienced, they went to the consultation. (narrated by Bai’s wife). After the neurosurgery director Zhu received the patient, he made detailed inquiries and scientific diagnostic assessments, and concluded that the patient had a large cranial defect and had developed a more serious cranial defect syndrome, and should undergo cranial bone repair surgery in a timely manner. After communicating with the patient and his family, the patient also had a strong desire for surgery. Director Zhu arranged for a thin-section CT scan to be performed on Bai, collected cranial data, performed a 3D reconstruction design, and applied 3D printing technology to create a polyetheretherketone PEEK repair plate that was personalized and precisely adapted to the patient’s bone window. Director Zhu and his team then performed the PEEK skull repair. During the surgery, the scalp was incised along the original incision, the bone window was exposed, the 3D shaped PEEK plate was placed in the bone window, the repositioning was adjusted, the precise inlay was satisfied, the PEEK laminate and titanium nail were used to fix the skin well, and the skin was sutured layer by layer. The surgery was successfully completed, and after the PEEK cranial repair, the patient’s head was restored to its original shape, and he was discharged from the hospital with a good mental state. The advantages of polyetheretherketone PEEK material for cranial repair: Polyetheretheretherketone is a special polymer material with very good performance, basically comparable to autologous cranial bone, which can effectively avoid postoperative infection, rejection, wear and tear of the scalp, prevent material exposure, and will not have cold and heat sensitive reaction, force collapse deformation, affect CT nuclear magnetic examination, etc. In addition, polyetheretheretherketone through three-dimensional reconstruction design, 3D printing production Highly restores the skull structure and has excellent shaping effect. It can achieve the good effect of anatomical integrity, structural restoration, functional perfection and beautiful appearance, which is well received and recognized by the majority of patients.