The skull is like a helmet that protects our brain all the time. However, we can not predict and control the occurrence of accidents, many people just because of an accident led to serious trauma to the skull, brain tissue without the protection of the skull, at any time may be subject to external aggression, must not be careless. Cranial defects will lead to a series of sequelae, the damage is less severe patients often feel dizziness, panic, chest tightness, a slight sleep disorder and neurological dysfunction phenomenon; serious damage to the patient may be paralyzed limb function, memory impairment, and even dementia, and so on. Cranial defects are important and require prompt cranial repair surgery. However, in cranial bone repair surgery, the choice of material is something that will directly affect the outcome of the surgery. The traditional materials include bone cement, plexiglass, etc. These materials are cheap, but the postoperative effect may not be ideal, and there are also many defects, which are gradually no longer used. Later on, titanium mesh material was gradually applied, which is also not expensive and has really improved a lot than the traditional materials, but again, there are inevitably some problems and the results are not very satisfactory. In order to allow patients to get better recovery results, we introduced a more advanced and safe polymer materials, that is, polyether ether ketone PEEK material, successfully integrated into the concept of plastic surgery in the operation, many patients have been well treated. For the cost of surgery patients do not have to worry about, patients with medical insurance process can also get the corresponding reimbursement, greatly saving the cost of treatment.