Abstract: ObjectiveTo investigate the iodine nutritional condition of pregnant women in Quanshan District, Xuzhou, so as to provide sound evidence for iodine supplementation in the area. MethodsA total of 50 pregnant women at the second trimester and 50 pregnant women at the third trimester were selected in April, 2015 and 2016. Their urinal samples and edible salt samples were collected for the urinary iodine test and salt iodine test. ResultsThe median urine iodine (MUI) was 241.5 μg/L for pregnant women at the second trimester and 177 μg/L for those at the third trimester. The MUI was 184.5 μg/L in 2015 and 214.5 μg/L in 2016, without statistical difference (P＞0.05). The urinary iodine results revealed statistic differences in both optimal and excessive iodine intake levels among the second and trimester pregnant women (P＜0.05). The iodine deficiency rate among pregnant women taking non-iodized or substandard iodine salt was remarkably higher than that among those taking standard iodine salt (P＜0.05). ConclusionsPregnant women in Quanshan District have adequate iodine intake, but 36.5% of them still suffer from iodine deficiency and 10.5% with excessive iodine intake. More information should be given about iodine deficiency disorders and more directions on diet. There should also be more iodine tests to ensure an optimal iodine intake among more women to guarantee a normal intelligent development of babies.