Abstract: Objective To investigate the iodine nutritional status of the midtrimester pregnant women in Hefei after the new implementation of salt iodine policy. Methods Urine iodine levels were measured in 246 cases of the midtrimester pregnancies from Maternal and Child Healthcare Hospital of Hefei to analyze their iodine nutrition from December 2016 to January 2017. Results The median iodine level in urine was 143 ug/L,the ratio of iodine deficiency was 55.28%,the ratio of normal iodine level was 24.39%,and iodine level above the normal was 16.26%. 4.07 percent of the pregnant women showed an excessive iodine concentration in the urine. No statistically significant difference was seen of the urine iodine level in different age groups. Conclusion The iodine deficiency of pregnant women was notable after the implementation of the new salt iodine policy,indicating that urgent attention should be paid to optimize the daily amount of iodine uptaken to improve the quality of births.

Key words: Iodine nutrition, Urinary iodine, Pregnant woman