为了回答近年来人们对碘酸钾（KIOn 3）碘盐的关注，作者重新回顾了KIOn 3代替碘化钾（KI）作为碘盐强化剂的背景和效果、我国碘盐中强化剂决策变化、毒理学研究及进展、碘酸根离子（IOn 3-）是否不经分解而出现在尿中。国际组织和各国或地区相关机构肯定KIOn 3碘盐的安全性且有着系列研究为依据；谈及碘盐中所添加KIOn 3的安全性一定要基于其微量的前提，以及盐的不可多食性的保障；食品中的还原性物质、烹饪加热或机体还原系统能很快将微量的IOn 3-还原为碘离子（In -），新鲜尿中不存在IOn 3-。n “,”In response to the recent interest in potassium iodate iodized (KIOn 3) salt safety, we reviewed the background of KIOn 3 in replacing of potassium iodine (KI) as salt fortificator and its effect in prevention and control of iodine deficiency disorders (IDD) or endemic goiter, the decision-making changes of fortificator of iodized salt in China, the research and progress of toxicology, and whether IOn 3- exits in urine without decomposition or not. Our inclusions are: it is believed that the decision of the international organizations and agencies of national and local governments about the safety of KIOn 3 in iodized salt is supported by adequate and scientific evidents. When it comes to the safety of KIOn 3 added in iodized salt, it must be based on the trace amount of KIOn 3 in salt which is limited while intaking. Reductive substances in food, cooking heating or reduction system of human body might quickly reduce trace IOn 3- to In -, therefore, IOn 3- might not be found in fresh urine.n