Cranial defects are a common problem in our society today, as some people suffer from cranial damage due to accidents, trauma and diseases. Skull defects are a direct threat to life and health as the brain loses its protective barrier. Therefore, in order to recreate the hard protective shell of the brain, skull repair surgery must be done to maintain life and health. In other words, when there is a problem of skull defect, it is imperative to have skull repair surgery. Many patients first ask similar questions, but don’t worry, cranial repair surgery is a very common procedure and the cost is not very high, as long as you choose to go to a regular hospital, the cost is fair and reasonable. As long as the patient’s situation is in line with the medical insurance policy and local regulations, some of the costs can still be reimbursed through the medical insurance, which also greatly reduces the cost of medical treatment. While caring about the cost of skull repair surgery, patients should focus more on the results of the surgery. This involves the choice of materials, the technique of repair surgery and the choice of surgeon, only when these are done well, the surgery can be more successful. Moreover, the choice of surgical materials also directly affects the cost of surgery. The common materials used for skull repair surgery are titanium mesh, bone cement, plexiglass, etc. However, after many clinical verifications, these traditional materials are more harmful than beneficial, so they are slowly not being used anymore. At present, the more popular material is peek material, which is a kind of polymer material, it appears to make up for the various shortcomings of traditional materials. peek material is strong and elastic, high biocompatibility, strong thermal insulation stability, and also can be customized, and there will be no rejection after surgery, so it is the material of choice for skull repair surgery.