我国是碘缺乏病较严重的国家，病区波及29个省市、自治区[1]。地处江淮丘陵的含山县是安徽省碘缺乏病病区之一。碘摄入不足对处于生长发育期的中小学生及学龄前儿童健康构成威胁。据国内抽样调查显示，重病区儿童智力水平比非病区低10－15个百分点[2]。因此，加强少年儿童碘缺 China is a country where iodine deficiency disorders are more serious. The ward spread to 29 provinces, autonomous regions and municipalities [1]. Hanshan County is located in the Jianghuai Hilly Anhui Province is one of the iodine deficiency disorders. Inadequate intake of iodine in the growth and development of primary and secondary school children and pre-school children constitute a threat to health. According to a sample survey in the country, children with severe illnesses have a 10-15% lower intelligence level than non-endemic areas. [2] Therefore, to strengthen iodine deficiency in children