对历史上克山病重病区陕西黄陵县部分重病村做了普查，共查１１２２人，结果表明∶①１１２２人中检出潜在、慢型克山病４０例，检出率为３．７５％，总的发病趋势稳中有降；②潜在型克山病的新发生率为５３．５／万，且以３～１５岁儿童为主；③病区重点人群发硒含量达到非病区水平，而发中微量元素锰、铁含量较高；④慢型克山病死亡率较高（３年死亡率为３３．３％）。死亡多为３０～４０岁的中、青年。 A total of 1,122 people were investigated in some seriously ill villages in Huangshan County, Shaanxi Province in the history. The results showed that: Among 11212 persons, 40 cases were found with potential and chronic Keshan disease, the detection rate was 3.75% , The overall incidence trend is steady down; ② The new incidence of latent Keshan disease is 53.5 / million, and mainly children aged 3 to 15; ③ The selenium content of key patients in the ward reach the level of non-ward , While hair microelement manganese, high iron content; ④ chronic Keshan disease higher mortality (3-year mortality was 33.3%). Mostly death 30 to 40 years old, young.