Objective To understand the iodine nutrition status of students in Fengyang County,Chuzhou City and the influence of intake frequency of iodine containing food on the iodine nutrition level of students,so as to provide basis for timely adoption of targeted prevention and control measures and scientific adjustment of intervention strategies. Methods According to the Iodine deficiency disease monitoring plan of Anhui Province (version 2019),40 non boarding students aged 8-10 were sampled from each primary school.The salt and urine samples were collected to determine the salt iodine content and urine iodine level.The thyroid volume of the students was examined by B-ultrasound.A questionnaire survey was conducted on the eating places and the consumption of iodine containing food of the above students. Results The median iodized salt consumption rate of 200 students aged 8-10 in Fengyang County was 23.7 mg/kg,and the qualified iodized salt consumption rate was 94.0%.The median urinary iodine was 186 μg/L,the median urinary iodine of students aged 8,9 and 10 were 169 μg/L,189 μg/L and 186 μg/L.There was no significant difference in urine iodine level among students of different ages (H=1.522,P=0.467).The median urine iodine level of boys was 199 μg/L,and the median urinary iodine of girls was 179μg/L,there was no significant difference between male and female urinary iodine levels (Z=-1.560,P=0.119).The goiter rate of students was 2.5%,and that of male and female students were 2.0% and 3.0% respectively,with no significant difference (P_Fisher＞0.999) . Conclusion The iodine nutritional status of children aged 8-10 in Fengyang County is at the appropriate level.The level of iodine in the urine of students at random is affected by many factors.While standardizing the consumption of qualified iodized salt,reasonable diet is still required to prevent iodine deficiency and avoid iodine excess.