Abstract: Objective To understand the situation of iodine deficieney disorders(IDD)in Bishan and Yunyang country of Chongqing city in order to provide evidence for formulating prevention and control tactics.Methods With clusterran domsam ple method,urinary iodine,familial iodine salt use,rate of goite,rand in telligence quotient among the children aged 8-10 years were detected.Results To tally 571 urine sam ples were inspec ted.The urinary iodine median was 261.47μg/L.There were 33(5.78%)and 214(37.48%)children with urinary iodine median less than 100μg/L and more than 300μg/L.The iodine salt coverage rate,the qualified rate and qualified iodine salted ible rate was 99.64%,94.77%,and 94.42%,respectively,for 556 family table salt samples.Among 557 pupils,goiter was found in 60(10.36%)children by palpation and 53(9.15%)by Bultrasonog raphy.Conclusion The iodined salt use in the two counties is good,but there are still high level of urinary iodine and goiter rate than the national average.