The cranial bone not only plays a role in maintaining the beauty of the head for the human body, it is an indispensable protective layer of the brain, but a sudden accident makes the cranial bone missing a piece, the danger of which must be clear to people. When facing the problem of skull defect, what you have to do is to go to the hospital for examination and actively arrange the treatment in time. Nowadays, in the neurosurgery department of major hospitals, there are really many patients with cranial defects, and there are also some children with cranial defects. Compared with adults, children’s physical functions and psychological quality are weaker, and they are in the stage of growth and development, so if long-term cranial defects are not treated, the impact and damage caused to them will be even greater. Of course, no matter children or adults, as long as cranial defects occur, they must be repaired in time, so as to better restore the integrity of the skull, reshape the stable cranial environment, and ensure the normal functioning of the brain. So what materials are used for skull repair in children? This should be the concern of many parents, after all, in the skull repair surgery, the good or bad material will directly affect the post-operative effect, and also affect the occurrence of post-operative complications. At present, many local hospitals widely use titanium mesh material, which is a kind of metal material, and is much more progressive than those materials earlier, but it may still have some unavoidable problems, such as more infections and scalp abrasion after surgery, sensitivity of the affected area to external hot and cold environment after surgery, affecting medical examinations such as CT magnetic resonance, and easy collapse and deformation by external forces. In addition, there are even clinical cases of material exposure. In order to make up for the shortage of titanium mesh material, our team successfully used a new type of polyether ether ketone peek material to carry out treatment, the performance of peek material is very good, and according to the patient’s own head CT data for three-dimensional shaping design, 3D printing production, highly restore the head structure morphology, coupled with the introduction of the concept of aesthetic surgery in the operation In addition, the concept of aesthetic plastic surgery is introduced, which makes the postoperative aesthetics and precision are quite ideal.