Is skull repair surgery risky? Many patients who need cranial bone repair have this question. Thinking that repair surgery is a risky procedure. They do not dare to try it. In fact, skull repair surgery has been innovated through years of technology and material improvement, and the technology is relatively mature. The risk of surgery is not high. The materials used for skull repair surgery in the early days were silicone, bone cement and autologous bone. Nowadays, titanium mesh and peek (polyether ether ketone) materials are mostly used in clinical practice. Peek material is the most suitable material for skull repair. Peek material has better performance compared to other materials, and the advantages of the material compared to titanium mesh is that it has better histocompatibility. It is more comfortable and thicker. It is similar to human skull. Especially for pediatric patients, it can better adapt to the growth and development of human autogenous cranial bone. And it will also have lower infection and rejection rates. The most important point is that polyetheretherketone material is a material that can be plasticized in three dimensions, and it can be customized in three dimensions according to different patients’ conditions. It truly restores the physiological structure of the skull perfectly. Many patients are concerned that “the surgery is craniotomy will not increase the risk”, but there is no need to worry too much. Although the surgery is a craniotomy, the procedure does not involve brain tissue or cerebral blood vessels. It only repairs the defective bone window, so unlike the invasive craniotomy, the surgery is relatively safe and the risks are minimal. Patients can rest assured that they can choose a trustworthy hospital and physician for surgical communication, keep a good attitude and do not worry too much.