[目的]了解济宁市农村降氟改水后生活饮用水中氟含量情况,为预防地方性氟中毒提供依据。[方法]2008年,在济宁市所辖8个县(市、区)农村抽取部分降氟改水后生活饮用水进行水氟含量调查。[结果]138个检测点均未设消毒设施,未采取除氟措施;水源为深井的占87.68%。枯水期、丰水期各检测276份,水氟含量合格率分别为82.97%、87.68%(P>0.05);52个高氟为主的监测点,枯水期、丰水期各104份水样氟含量合格率分别为78.85%、82.69%(P>0.05)。8个县(市、区)中,任城区、邹城市、兖州市枯水期和丰水期水样氟含量均合格;其他5个县(市)均有氟含量超标的水样,枯水期、丰水期超标率的差异均有统计学意义(P<0.01),梁山县和金乡县合格率较低。[结论]济宁市农村降氟改水后生活饮用水氟含量超标率较高。 [Objective] To understand the fluorine content of drinking water in rural areas of Jining City after demineralization and water improvement, and to provide basis for prevention of endemic fluorosis. [Method] In 2008, a survey of water fluorine content of drinking water after partial fluoride removal and water improvement was taken in rural areas of 8 counties (cities and districts) under the jurisdiction of Jining. [Result] No disinfection facilities were set at 138 checkpoints, and no fluoride removal was taken. The water source was deep well accounting for 87.68%. In the dry season and the wet season, 276 samples were tested respectively, and the pass rates of fluoride in water were 82.97% and 87.68% respectively (P> 0.05); 52 high fluoride-based monitoring points, 104 water samples in dry and wet periods The pass rates were 78.85% and 82.69% respectively (P> 0.05). Of the 8 counties (cities and districts), the water content of fluoride in dry season and wet season in Rencheng District, Zoucheng City and Yanzhou City were all qualified. In the other 5 counties (cities), water samples with excessive fluorine content, dry season, abundant water The differences of the exceeding standard rate were statistically significant (P <0.01), and the passing rates of Liangshan County and Jinxiang County were lower. [Conclusion] The fluorine content in domestic drinking water after drinking water had been lowered by fluoride in Jining City was higher than the standard.