１９９２年４月对乌当区氟病防治试点村的人群进行了流行病学调查和环境、人群生物样品以及食物中氟化物的监测，以评价自１９８９年以来改灶降氟措施的效果和居民总摄氟量的变化。结果表明改灶后空气中的氟化物、ＳＯ及ＴＤＰ明显下降，总摄氟量降至４ｍｇ。同时本文对影响降氟的因素和尿氟、发氟、指甲氟等评价指标进行了探讨。 Epidemiological surveys and environmental, human biological samples and fluorides in food were conducted in April 1992 in Wudang District, a pilot village for the prevention and control of fluorosis, to evaluate the effect and residents’ The total amount of fluorine changes. The results showed that the air fluoride after the stove change, SO and TDP decreased significantly, the total fluoride intake decreased to 4mg. At the same time, this article discusses the factors that affect the fluoride reduction and urinary fluoride, hair fluorine, nail fluorine and other indicators were discussed.