Can MRI be done for cranial bone repair? With the improvement of living standard, health consciousness and economic income, people’s requirements for the performance of cranial repair materials are getting higher and higher, and it is almost difficult for a single traditional material to meet people’s needs for aesthetic and rehabilitation. According to the clinical statistics in recent years, many people are not only concerned about the post-operative aesthetic effect when choosing materials, but also pay extra attention to the post-operative rejection, infection, and MRI examination. According to many years of clinical experience, it is possible to do MRI after skull repair, but some materials may affect the postoperative examination due to poor biocompatibility. For example, titanium mesh, which is widely used in clinical practice, as a metal material, patients are more sensitive to changes in the external hot and cold environment after surgery, and a large number of artifacts will appear when doing MRI, thus affecting the image diagnostic performance. In addition, titanium mesh is covered, and long implantation time is prone to material leakage, and postoperative problems such as rejection infection may occur, so patients must be careful when choosing repair materials. With the advancement of medical research, cranial repair materials and repair surgery are constantly advancing, polyether ether ketone PEEK material with its excellent performance has become a more ideal cranial repair material, the material radiation can pass through, will not affect the patient’s postoperative examination, for MRI examination, CT examination imaging will also be clearly displayed.