小儿超高热是指患儿的体温≥41℃,是小儿急危重症之一,可诱发脑水肿抽搐、呼吸衰竭、心力衰竭、肾功能不全、低氧血症、代谢性酸中毒及高糖血症,使原发病加重以至恶化,冶疗不及时,可使患儿死亡或遗留后遗症。为探讨高海拔地区(2300ｍ以上)小儿超高热的病因、发病率及其并发症、 Children with hyperthermia refers to children with body temperature ≥ 41 ℃, is one of the critical children with acute can induce cerebral edema convulsions, respiratory failure, heart failure, renal insufficiency, hypoxemia, metabolic acidosis and hyperglycemia Disease, aggravating the original disease as well as deterioration, treatment is not timely, can make the child died or legacy sequelae. In order to explore the etiology, morbidity and complications of children with hyperthermia in high altitude areas (above 2300m)