界首市为碘缺乏区 ,1996年根据省统一要求 ,开展了食盐加碘工作 ,实施全民普服碘盐。为了解防治效果 ,自 1997年起逐年进行了调查与考核评价 ,现将结果报告如下 :1　对象与方法1.1　对象　按照东、西、南、北、中五个方位随机抽取五个乡 ,每乡随机抽取一所小学 ,每所小学抽取 8 Jieshou City for iodine deficiency area, in 1996, according to the requirements of the province unified, carried out salt iodization work, the implementation of universal universal iodized salt. In order to understand the effect of prevention and treatment, the investigation and assessment have been carried out year after year since 1997. The results are reported as follows: 1 Subjects and Methods 1.1 Subjects Five townships were randomly selected according to the five orientations of East, West, South, North and North, A primary school is randomly selected and each primary school draws 8