Cranial defect is a common disease in neurosurgery, and the danger of cranial defect is still very big. One is the lack of protection, may cause secondary damage, and even directly threaten the safety of brain tissue, resulting in serious consequences; another is because the skull defect will cause a dysfunction of the intracranial nervous system, resulting in a number of uncomfortable symptoms, which is usually referred to as cranial defect syndrome; there is also an important harm is that the patient’s psychological and mental damage, the patient may produce a great sense of inferiority. Another important harm is that it may cause great damage to the patient’s psychology and spirit. Therefore, after the occurrence of cranial defects, cranial repair should be carried out in a timely manner. Some patients ask if hot or cold weather will affect them after cranial repair. This has to do with the material used for cranial repair. At present, the widely used cranial bone repair material in most hospitals is titanium alloy titanium mesh material, this metal material has a certain coefficient of thermal expansion and contraction, which may cause thermal expansion and contraction due to the change of the external temperature, thus producing a lot of discomforts; at the same time, titanium mesh metal material, thermal insulation is not good, the external hot and cold environments, which may directly affect the temperature of this material, and then affect the intracranial temperature, which may also produce a lot of discomfort. Environmental temperature, will also produce a lot of discomfort; at the same time titanium mesh material there are some other problems, such as postoperative infection and rejection, deformation, wear and tear of the scalp, resulting in the exposure of the material, affecting the ct nuclear magnetic examination and so on. Therefore, it is not recommended to use titanium mesh material for skull repair. Currently very advanced polyether ether ether peek material, and constantly improving and upgrading technology, material optimization design, and the introduction of cosmetic surgery concept. Thus the comprehensive peek cranial bone repair plastic surgery, not only can complete a good cranial bone repair, but also to ensure tissue activity, to ensure the integrity of the nerve function and the shape of the skull in a well-proportioned and beautiful aspects of the good, to achieve the anatomical integrity, functional integrity, the overall unity of the appearance of the beautiful received the majority of patients and family members of the praise and recognition.