The importance of cranial bone is self-evident, however, many people have cranial defects for one reason or another in life, which seriously affects the aesthetics and is also a great harm to their health. Cranial defect is a big problem, patients must pay attention to it, early to the hospital to do cranial repair surgery is the most important thing. Only through cranial repair surgery can the integrity of the skull be restored and bigger problems be avoided. When it comes to skull repair surgery, the key point is the choice of repair material, only good material repair effect will be better. At present, the titanium mesh material is widely used in medicine, what are the contraindications after skull repair titanium mesh? It is worthwhile for patients to understand the problem. 1, skull titanium mesh repair after, must pay attention to avoid infection problems, to avoid collision injury again, because the hardness of titanium mesh material is not very strong, in some strong collision and impact will lead to deformation. 2, after the surgery, can not be exposed to the sun, otherwise it will lead to a significant burning sensation on the patient’s scalp, affecting the results. In addition, it is not advisable to stay in too cold environment. 3, titanium mesh repair skull after, must not do some more strenuous sports, such as bungee jumping and so on. 4, titanium mesh is a metallic material, after the operation can not do CT magnetic examination, because it will lead to artifacts in the examination results, affecting the diagnostic results. Obviously, there are still many contraindications to using titanium mesh material for skull repair surgery, and there are also many defects. Therefore, it is no longer recommended to use titanium mesh for skull repair surgery. There is also a new type of material that can be used, which is peek material, the characteristics of this material is comparable to the human skull, the postoperative effect is quite good, and do not have to worry about any adverse reactions and sequelae. It is reported that PEEK cranial bone repair plastic surgery, can achieve anatomical integrity, functional perfection, aesthetic appearance of the organic unity, significant results. With 3D printing, comparable to autologous cranial bone, it is the preferred cranial bone repair material for patients.