AimTo investigate the prevalence of metabolic syndrome(MS) among Xingjiang Han population aged 30-80 and compare the differences of three diagnostic criteria used for MS, which are the National Cholesterol Education Program(ATPⅢ),International Diabetes Federation(IDF) and Chinese Medical Association Diabetes Branch(CDS).MethodsA cross-sectional study was conducted on 2656 Xingjiang Han people aged 30-80.The prevalence of MS and the degree of agreement were both calculated according to the three definitions and the results of MS components were also analyzed.ResultsAccording to the three definitions(ATPⅢ,IDF and CDS),The prevalence(adjusted prevalence) of MS were 27.03%(27.18%),22.40%(20.39%) and 16.04%(16.02%).According to the three definitions(ATPⅢ,IDF and CDS),the prevalence of subjects presenteding at least 3 risk factors were 98.64%,97.9% and 92.81%.Among all the MS subjects, the MS diagnostic criteria of ATPⅢand IDF were in good accordance with Kappa index(0.7801),Youden index(0.7928) and concordance rate(0.9026).CDS was in relatively weak agreement when comparing with other definitions (ATPⅢ and IDF).ConclusionOur findings revealed big differences in the prevalence, the degree of agreement and aggregation of risk components on MS among Xingjiang Han population.IDF criteria’s detection rate of MS was the most, ATPⅢ criteria’s detection rate of subjects presenteding at least 3 risk factors was the most,the concordance of ATPⅢ criteria and IDF was better.