碘是人体不可缺少的一种微量元素,碘缺乏威胁人类健康[1],主要表现为甲状腺肿大和地方性克汀病,也可导致流产、死胎、先天畸形和新生儿死亡率增高,但最主要的危害是缺碘影响胎儿的脑发育,导致儿童智力和体格发育障碍,学习能力下降,造成碘缺乏地区人口的智能损害[2]。坚持食用加碘食盐是平衡碘营养状况的有效途径,是2010年实现消除碘缺乏病 Iodine is an indispensable human trace element, iodine deficiency threatens human health [1], mainly manifested as goiter and endemic cretinism, but also can lead to miscarriage, stillbirth, congenital malformations and neonatal mortality increased, but the most The main hazard is the lack of iodine affect fetal brain development, resulting in mental and physical development of children with disabilities, decreased learning ability, resulting in iodine deficiency areas of the population of intelligent damage [2]. Adhere to eating iodized salt is an effective way to balance the nutritional status of iodine is to eliminate iodine deficiency disorders in 2010