Objective To study the prevalence situation and epidemiological characteristics of thyroid nodule among health examination population in Baotou so as to provide scientific basis for prevention and treatment of thyroid disease.Methods Health examination people from 2011 to 2012 years in No.2 Affiliated Hospital to Baotou Medical College were randomly selected to collect their basic information and thyroid Doppler ultrasonic testing data.Results 745 cases were found thyroid nodules with a total prevalence rat...