目的为动态了解南安市历史地氟病区改水工程运行情况、掌握地氟病病情现状,评价改水降氟措施效果。方法按照《福建省饮水型地方性氟中毒监测方案》要求,组织开展我市饮水型地方性氟中毒监测工作。结果在改水工程正常运转且水氟含量合格的自然村,8~12岁儿童氟斑牙患病率为13.8%符合《地方性氟中毒病区控制标准》(GB17017-2010)氟斑牙患病率不超过30%的规定,尿氟几何均值为0.97 mg/L,符合《人群尿氟正常值》(WS/T256-2005)“成人群体尿氟几何均值不大于每升1.6 mg”的规定。结论提高群众对地氟病危害和来源的认识,增强病区群众防氟意识,养成良好的饮水、用水习惯,远离地氟病威胁。 Objective To understand the operation status of water diversion project of historical fluorosis in Nan’an City and to know the status of endemic fluorosis and to evaluate the effect of water diversion and fluoride reduction. Methods According to the requirements of “drinking water endemic fluorosis monitoring program in Fujian Province”, we organized the monitoring of drinking water endemic fluorosis in our city. Results The prevalence of dental fluorosis in children aged 8 ~ 12 years was 13.8% in the natural villages with normal water diversion works and water fluoride content, which met the control criteria of endemic fluorosis area (GB 17017-2010) The geometric mean of urinary fluoride is 0.97 mg / L, which is in line with the “normal urine urinary fluoride” (WS / T256-2005), “the geometric mean urinary fluoride of adult population is not more than 1.6 mg / L” Provisions. Conclusion The public should be aware of the dangers and sources of earth-borne fluorine disease, enhance awareness of the people in preventing wasting of fluorine in the ward, and develop good drinking water and water use habits to keep away from the threat of earth-borne diseases.