食盐加碘防治碘缺乏病，是２０世纪２０年代首先在瑞士租美国开始的。以后，相继在欧洲、中美及南美洲许多国家推广应用。８０年代，一些发达国家已经较好地控制了碘缺乏病的危害。１９９０年，世养卫生大会和世界儿童问题首脑会议之后，亚洲、非洲的许多国家政府制订了消除碘 Iodized salt iodine deficiency prevention and control, is the 20th century, first started in the United States to rent the United States in Switzerland. Since then, have been in many countries in Europe, Central America and South America to promote the application. In the 1980s, some developed countries have better controlled the harm of iodine deficiency disorders. Since 1990, the World Health Assembly and the World Summit for Children, many governments in Asia and Africa have enacted measures to eliminate iodine