碘缺乏病是由于自然环境缺碘使机体摄入碘不足而产生的一系列损害。正常情况下每人每天碘的需求量为150μg,而儿童和妇女的需求量为200μg〔1〕。尿碘水平是评价人群及个体碘营养水平状况的敏感指标,也是碘缺乏病监测的重要内容之一。为了解青海省不同碘水平地区8～10岁儿童和 Iodine deficiency disease is a series of damage caused by lack of iodine in the natural environment that causes iodine deficiency in the body. Under normal circumstances, the daily demand for iodine per person is 150μg, while the demand for children and women is 200μg 〔1〕. Urinary iodine level is a sensitive index to evaluate the status of iodine nutrition in the population and individual, and is also one of the important contents of iodine deficiency monitoring. To understand the different iodine levels in Qinghai Province, children aged 8 to 10 years