对1999年执行新的加碘标准(35±15 ) m g/kg以来,山西省对每年的盐业和居民户的盐碘、尿碘监测资料进行了统计分析,探讨下调现行加碘盐执行标准的可行性。1　资料与方法1999年以来,为观察居民户盐碘水平与儿童碘营养状况的改善情况,5 a间我所每年在全省范围内进行抽样监测。199 Since the implementation of the new iodine standard (35 ± 15) mg / kg in 1999, Shanxi Province has conducted a statistical analysis on salt iodization and urinary iodine monitoring data of salt industry and households each year, and discussed ways to lower the current implementation standard of iodized salt Feasibility. 1 Materials and Methods To observe the improvement of iodine in children and iodine nutrition status of children since 1999, we conducted sampling monitoring every year within 5 years in our province. 199