摘要目的:掌握浙江省临海市8~10岁儿童的尿碘和甲状腺容积情况，评估儿童群体的碘营养水平，为制定消除碘缺乏病干预措施提供依据。方法:2019年，采用系统抽样方法，在临海市东、西、南、北、中5个片区各抽取1所乡镇（街道）中心小学，每所小学至少抽取40名8~10岁儿童，采集儿童家庭食用盐盐样和日间1次即时尿样进行盐碘与尿碘检测，同时进行甲状腺B超检查。结果:共采集盐样215份，盐碘中位数为21.0 mg/kg，碘盐覆盖率为57.2%（123/215），碘盐合格率为91.9%（113/123），合格碘盐食用率为52.6%（113/215）。共采集尿样215份，尿碘中位数为166.0 μg/L，尿碘< 50 μg/L的占5.1%（11/215）。共检查215名儿童甲状腺，甲状腺肿大率为4.7%（10/215）。结论:临海市8~10岁儿童总体碘营养水平处于适宜（100~199 μg/L），甲状腺肿大率在碘缺乏病消除标准限值（5%）内，但碘盐覆盖率、合格碘盐食用率严重偏低。

abstractsObjective:To investigate the urinary iodine and thyroid volume of children aged 8 to 10 years in Linhai City Zhejiang Province, and evaluate the iodine nutrition level of children so as to provide a basis for formulating intervention measures to eliminate iodine deficiency disorders.Methods:In 2019, a systematic sampling method was adopted to select 1 township (street) central primary school in each of the 5 areas in the east, west, south, north, and middle of Linhai City. At least 40 children aged 8 to 10 years were selected from each of the central primary schools in each township (street) to collect family edible salt samples and one-time urine samples during the day for salt iodine and urinary iodine testing, respectively, as well as thyroid B-ultrasound examination.Results:A total of 215 salt samples were collected. The median salt iodine was 21.0 mg/kg, the coverage rate of iodized salt was 57.2% (123/215), the qualified rate of iodized salt was 91.9% (113/123), and the consumption rate of qualified iodized salt was 52.6% (113/215). A total of 215 urine samples were collected. The median urinary iodine was 166.0 μg/L, and the proportion of urinary iodine < 50 μg/L accounted for 5.1% (11/215). A total of 215 children were examined, and the goiter rate was 4.7% (10/215).Conclusion:The overall iodine nutrition level of children aged 8 to 10 years in Linhai City is at an appropriate level (100-199 μg/L), and the goiter rate is within the standard limit for the elimination of iodine deficiency disorders (5%), but the coverage rate of iodized salt and the consumption rate of qualified iodized salt are seriously low.