Cranial bone repair surgery is a relatively common type of surgery for repairing cranial bone defects caused by various reasons. Currently, many hospitals use titanium mesh material for cranial bone repair. However, the performance of titanium mesh is not very good, and various problems may occur after the surgery. For example, postoperative scalp infections, scalp breakage leading to the exposure of the material, a phenomenon that occurs from time to time in the clinic. Some patients ask if they can be treated conservatively with medication for a skin infection on the exposed head of the titanium mesh. In this case, if the exposed portion is not very large and the infection is not very serious, timely medical attention can be sought and conservative anti-inflammatory and anti-infection treatment can be attempted. If you can achieve better results, the infection can be effectively controlled and the skin heals well, then of course it is the best. However, there are quite a number of patients who cannot get good results after conservative medication, or even become more and more serious, and the exposed part of the titanium mesh may gradually increase in size, then it is necessary to remove the titanium mesh in time and carry out the replacement of the material. In fact, the titanium mesh material, not only the postoperative infection this problem, there may be some other complications. Like the material hardness is not enough, easy to external forces collapse deformation; titanium mesh material insulation is not good, after surgery may produce to the outside world of hot and cold environment is more sensitive to discomfort; there is also it is a metal material, it will affect the projection of the ray and interference with the magnetic field, then after the operation may be on the ct nuclear magnetic examination of these tests have an impact: so at present is not recommended to use titanium mesh material for cranial bone repair. At present, the more advanced material is polyether ether ketone PEEK material, this new type of special polymer material has excellent performance, in terms of histocompatibility, hardness, elasticity, thermal insulation, ray projection, and plasticizing effect with the human autologous skull is very close to the cranium, has become a new trend of cranial bone repair materials, it is recommended that the majority of patients with cranial bone defects can choose to use this advanced material for cranial bone repair, then the titanium mesh material repair after infection, traumatic injury, and so on. mesh material repair after the occurrence of infection, exposure, it is also recommended to replace the PEEK material in a timely manner. In ordinary local hospitals, material replacement often requires a second operation, that is, the titanium mesh material is removed in the early stage, and then after a period of recovery and scalp healing, the implantation of this operation is carried out again for the second repair, which will bring more surgical trauma, greater risk and more treatment costs. Our team is now able to remove the titanium mesh material and insert the PEEK material at the same time. Through advanced ct scanning technology, without removing the titanium mesh, the team can carry out three-dimensional reconstruction of the patient’s skull, computer accurately simulate the patient’s bone window data, and then design and manufacture the material, and then complete the removal of titanium mesh material and implantation of PEEK in one operation at the same time, which greatly reduces the surgical trauma suffered by the patient and alleviates the patient’s economic pressure.