目的　调查和研究食盐加碘后天津市居民的甲状腺肿大率和碘营养状况。方法　在 6个区共调查居民 315 30人 ,7～ 14岁在校儿童 44 15人。对调查对象进行甲状腺肿大率、尿碘浓度、食盐碘含量等项目的调查。结果　 (1)食盐加碘后天津市居民的平均甲状腺肿大率为 5 .5 % ,8～ 10岁儿童平均甲状腺肿大率为 19.7%。甲状腺肿大率较食盐加碘以前有了明显下降 ,但下降的速度较缓慢。 (2 )天津市食盐加碘以后各区居民的平均尿碘中位数为 2 87.2 μg/L ,各区儿童尿碘中位数平均为 2 71.6 μg/L。证明总体人群碘营养充足。 (3)天津市居民总体盐碘含量超过 2 0mg/kg水平 ,各区居民户盐含碘量有 9.9%～ 41.1%超过 6 0mg/kg。说明碘盐的含碘量偏高是一个新的现象。 结论经过 3年左右的食盐加碘防治工作 ,天津市碘缺乏情况已得到控制 Objective To investigate and study the thyroid enlargement rate and iodine nutrition status of Tianjin residents after salt iodization. Methods A total of 315 30 residents and 44 15 children aged 7-14 years were surveyed in 6 districts. The survey of goiter rate, urinary iodine concentration, salt iodine content of the project investigation. Results (1) The average thyroid goiter rate of Tianjin residents was 5.5% after salt iodization, and the average rate of goiter among children aged 8-10 was 19.7%. Goiter rate than salt iodization before there has been a significant decline, but the rate of decline more slowly. (2) The average urinary iodine median of inhabitants in each district was 2 87.2 μg / L after salt iodization in Tianjin, mean urinary iodine median was 2171.6 μg / L in all districts. Prove the population iodine adequate nutrition. (3) The total salt iodine content of Tianjin residents exceeded 20mg / kg, and the salt iodine content of residents in all districts exceeded 9 0% -41.1% over 60 mg / kg. Description iodine salt iodine content is a new phenomenon. Conclusion After three years of salt iodization prevention and control work, iodine deficiency in Tianjin has been controlled