Objective To explore the correlations of obesity diagnosed by different indices and traditional Chinese medicine（ TCM） constitutions. Methods Health examination data of 983 subjects was collected using crosssectional survey including body mass index（ BMI）

waist circumference（ WC）

waist to height ratio（ WHtR） and waist hip ratio（ WHR）. The canonical correlation analysis was applied to study the correlations between obesity diagnosed by different indices and 9 types of TCM constitutions. Results The canonical variate V1 representing obesity indices was largely influenced by WC and the canonical variate W1 representing TCM constitutions was largely influenced by phlegm-dampness type

yang deficiency type

blood stasis type

qi stagnation type

qi deficiency type

dampness-heat type and gentle type. From an obesity indices angle

obesity diagnosed by WC and WHtR had positive correlations with phlegm-dampness type

dampness-heat type and gentle type. From a TCM constitution perspective

phlegm-dampness type

dampness-heat type and gentle type had positive correlations with obesity

while yang deficiency type

blood stasis type

qi stagnation type had negative correlations with obesity. Conclusion WC is a superior indice for obesity diagnosis and phlegm-dampness type and dampness-heat type are prone to develop obesity.