Cranial bone repair is usually caused by traumatic brain injury resulting in injury. Cranial bone repair is a common brain surgery procedure for repairing skull defects caused by traumatic brain injury and craniotomy etc. Cranial trauma and brain surgery to remove bone flaps, removal of benign tumors or tumor-like tumors of the skull, chronic osteomyelitis of the skull, etc. Damage to the skull is a difficult thing for every patient to face. Brain tissue loses both its strong protection and the beauty of the skull. Many patients who suffer from accidental damage to the skull hope to regain their health through surgery. Modern medical technology is well developed, and cranial repair surgery is gradually becoming a routine neurosurgical procedure. Many patients are willing to actively undergo the surgery after understanding and comparing. Cranial repair surgery is not as complicated as patients think, most of the general hospitals and even some local hospitals can carry out this surgery, the surgical technology and methods are very mature, and the clinical application is also very good. The preoperative anesthesia and sterilization work is no different from that of conventional surgery. During the operation, the surgeon will cut the scalp at the appropriate position according to the damaged part, shape and size of the skull, and separate the periosteum bluntly. The exposed bone window can be clearly seen after stopping the bleeding in the surgical field. The surgeon adjusts the shape of the preoperative 3D plasticized bone plate repair piece according to the physiological structure of the damaged area, fixes and repositions it, and then sutures the scalp layer by layer. A successful cranial bone repair is thus completed. Patients feel as if cranial bone repair is a simple minor surgery, but this is not true. Although it is a routine surgery, any surgery involving the vital organs of the human body is not to be taken lightly. The requirements for the surgeon are very high, and the surgeon must have rich clinical experience and be able to cope with various possible risks during the operation. The current clinical use of polyether ether ketone PEEK material for cranial bone repair surgery, the material is with three-dimensional reconstruction technology, high temperature resistance, and autologous cranial bone similar to the advantages of the cranial bone repair material is a better choice.