目的　确定贝尔湖附近牧区是否为氟中毒病区以及病情现状与摄氟来源。据此 ,制定防治地氟病的规划。方法　进行现况典型调查。调查对象为 8～ 12周岁儿童 ,氟斑牙按 Dean氏法诊断。饮水氟、尿氟、奶茶氟均采用氟离子选择电极法测定。结果　氟斑牙检出率 :宝东为 5 8.6 5 % ,贝尔为 6 6 .0 0 % ;尿氟含量均值 ,宝东为 6 .2 8mg/L,贝尔为 6 .5 6 mg/L;饮水氟含量均值 :宝东为 5 .2 5 m g/L,贝尔为 4.0 2 m g/L;奶茶氟含量均值 :宝东为 5 .80mg/L,贝尔为 5 .88m g/L。结论　贝尔湖附近牧区是一个饮水型与饮茶型相混合的氟中毒病区 ,以饮水型为主 Objective To determine whether the pasture area near Bell Lake is a fluorosis area, and the current status of the disease and sources of fluoride exposure. Accordingly, draw up plans for the prevention and treatment of fluorosis. Methods to conduct a typical survey. Subjects were children aged 8 to 12 years and dental fluorosis was diagnosed by Dean’s method. Drinking water fluorine, urine fluoride, milk tea fluorine fluoride ion selective electrode method. Results The detection rate of dental fluorosis was 56.6% for Baodong and 6.60% for Bell, mean urinary fluoride content was 6.28 mg / L for Baodong and 6.56 mg / L for Bell, The mean fluoride content in drinking water was 5.22 mg / L for Po Dong and 4.0 2 mg / L for Bell, while the average fluorine content in milk tea was 5.80 mg / L for Po Dong and 5.88 mg / L for Bell. Conclusion pasture near Bell Lake is a drinking-type and drinking-type fluoride poisoning ward, drinking-based