Cranial defects occur in a wide range of ages, and can occur in people of all ages, including many children. Children with cranial defects need early cranial repair, and attention should be paid to the choice of repair materials. What are the materials for cranial repair in children? There are many cranial repair materials, but not many of them are really effective. Patients should choose the best material for cranial bone repair, especially for children. Currently we use polyether ether ketone PEEK material is a particularly good cranial bone repair material, it has a very good tissue compatibility, very suitable for children with cranial defects, can adapt to the growth and development of the skull. In fact, not only children patients, for adult patients, this advanced peek material also has a great advantage, it can be complex shaping, excellent mechanical properties, good protective properties, high postoperative comfort, and gradually become the latest trend of cranial bone repair materials. Warm tips: children’s cranial bone repair must choose and autologous cranial bone equivalent repair material, which is also conducive to the development of bone. At the same time in ordinary life should also pay attention to diet, to develop good habits.