对原为缺碘地区，近两年实施补碘后缺碘状况已得到基本纠正的南京市八卦洲乡中心小学８～１２岁儿童的智商进行了测试，结果表明：低智商比例占１００％，仍显著高于正常参照人群，说明补碘措施可较快纠正学龄儿童的碘缺乏，降低甲肿率，却无助于学生智力水平的改善和提高。提示对孕妇和婴幼儿补碘才能真正消除碘缺乏危害 Idiopathic areas of the original for the past two years after the implementation of iodine deficiency iodine status has been basically corrected in Nanjing City Bagua Chau Township Central Primary School children aged 8 to 12 were tested IQ, the results showed that: low IQ accounted for 10  0 %, Still significantly higher than the normal reference population, indicating that iodine supplementation can quickly correct iodine deficiency in school-age children, reduce the rate of goiter, but it does not help improve and improve the level of intelligence of students. Tip for pregnant women and infants iodine can really eliminate the dangers of iodine deficiency