碘是人体必须的微量元素之一,碘缺乏病是以造成人类脑发育落后为主要特征的公共卫生问题。牡丹江市所辖6县(市)4区均为碘缺乏病流行区,于上世纪八十年代初实行全民食盐加碘(USI),人群的碘营养状况有了显著改善,为进一步了解食用碘盐二十年后我市儿童的碘营养与智力发育状况,作 Iodine is one of the trace elements that the human body must have. Iodine deficiency disease is a public health problem that is characterized mainly by the development of the human brain. Mudanjiang City, under the jurisdiction of the 6 counties (cities) 4 districts are iodine deficiency endemic areas, the universal salt iodization (USI) in the early eighties of last century, the population of iodine nutrition has significantly improved, in order to further understand the consumption of iodine Salt twenty years after the city’s children’s iodine nutrition and mental development, for