Cranial bone repair surgery, in neurosurgery is a very routine, very common, but also very classic a surgery, many patients because of trauma or because of cerebral hemorrhage or because of some intracranial disease and craniotomy, after the bone flap decompression, will be left behind the skull defect, which needs to be timely cranial bone repair surgery. The more widely used material in hospitals around the world for skull repair surgery is titanium mesh. Many patients may be aware of some of the defects or deficiencies of titanium mesh, for example, titanium mesh tissue compatibility is not too good, postoperative infection, rejection of this phenomenon; for example, titanium mesh insulation is not very good, postoperative may be more sensitive to the external hot and cold environments, resulting in a lot of discomfort; for example, titanium mesh as a kind of metal will affect the radiation projection, which affects the operation to accept the ct, MRI and other medical examinations; and also for example, titanium mesh as a kind of metal will affect the radiological projection, which affects the operation to receive some There are also many problems, such as titanium mesh hardness is not too high, if subjected to external forces, it is easy to occur concave deformation, and so on. Titanium mesh cranial repair surgery, if no special circumstances occur after surgery, pay attention to the protection of the general will not be still dangerous, but if the impact of a relatively strong external forces, then he is not too high hardness, deformation of the force is still very high chance of depression, clinically we have seen many such examples. So we should choose a better performance of the repair material. At present, the more ideal cranial bone repair materials, to count the polyether ether ketone PEEK material, which is a new type of special polymer materials, hardness is very high, basically will not be deformed. In addition, the other properties of polyether ether ketone PEEK material are very excellent, very ideal, and the human autologous skull basically equivalent performance, very good to overcome the titanium mesh material may appear in the above problems, in the clinic has achieved very good results.