克山病是以累及心脏为主的地方性心肌病。现已查明,本病分布在我国东北、华北、西北、中南、西南和西藏等的十四个省区的部分农村。根据地质普查资料,克山病病区分布在从我国东北斜向西南的一个狭长的缺硒地带。有些病区(东北、华北、西北)已证实有动物白肌病的存在;克山病发病时往往有家养动物的 Keshan disease is mainly involved in the heart of endemic cardiomyopathy. It has been found that the disease is distributed in some of the 14 provinces and autonomous regions in Northeast China, North China, Northwest China, South Africa, Southwest China and Tibet. According to geological census data, Keshan disease wards are distributed in a narrow, long-selenium-deficient zone from the northeast to the southwest of our country. Some wards (Northeast, North China, Northwest) have confirmed the presence of animal white muscle disease; Keshan disease often occurs when domestic animals