目的　了解饮水型氟中毒病区范围及饮茶型氟中毒病区。方法　采用氟电极法测定水氟、茶氟含量 ,用 Dean氏分度法进行儿童氟斑牙诊断。结果　只有阿苏木水氟含量为 (2 .12± 0 .74) m g/ L,其它苏木水氟含量均在正常标准以下 ;奶茶氟含量在 0 .5 5～ 4.1mg/ L 之间 ;砖茶含氟量在 (1.37± 1.2 0 ) mg/ g;儿童氟斑牙检出率超过 30 %的仅有 1个苏木。结论　新巴尔虎左旗如果视为氟中毒病区 ,尚需做深入细致调查研究 Objective To understand the scope of drinking water fluorosis area and tea fluorosis area. Methods Fluoride electrode method was used to determine the fluorine and tea fluoride contents, and the dental fluorosis method was used to diagnose children dental fluorosis. The results showed that only the content of fluorine in A wooden water was (2.12 ± 0.74) mg / L, the content of fluorine in other hematoxylin was below the normal level, the content of fluorine in milk tea was between 0.55 ~ 4.1mg / L, At (1.37 ± 1.2 0) mg / g, there was only 1 hematoxylin in the detection rate of dental fluorosis in children exceeding 30%. Conclusion Xin Baer tiger left flag if fluorosis area, still need to do a thorough and meticulous investigation and study