近年,克山病、大骨节病病情明显减轻,但新患仍有发生。全国克山病区有15个省(市)、自治区,666个县(区);大骨节病区有14个省(市)自治区,302个县(区)。两病受威胁的病区人口1亿多,现患200多万,建国后,经40余年病因研究,虽取得一些成就,但时至今日,病因仍未突破,有 In recent years, the conditions of Keshan disease and Kashin-Beck disease have been significantly reduced, but new cases have still occurred. There are 15 provinces (municipalities), autonomous regions and 666 counties (districts) in Keshan ward nationwide; there are 14 provinces (municipalities) autonomous regions and 302 counties (districts) in Kaschin-Beck Disease Disorders. There are more than 100 million people living in the wards where the two diseases are threatened. They now have more than 2 million. After the founding of the People’s Republic, after more than 40 years of research, although some achievements have been made, the etiology has not yet been broken.