Objective To explore the correlation between the degree of complicated constitution and upper-heat lower-cold.Methods Totally 277 healthy people

18 to 34 years old

both men and women

were selected to fill in the questionnaire on TCM constitution.Based on the result

they were classified into peaceful constitution group（111 cases）

single biased constitution group（72 cases）

and complicated constitution group（94 cases

with 2 or 3 biased constitutions simultaneously）.The automatic thermal analysis（ATA） infrared thermography measurement system was applied to measure the relative temperature difference of the body surface projection of Upper Jiao and its zangfu（lung

heart）

Lower Jiao and its zangfu（kidney

Mingmen

bladder

right and left large intestines）.Results The relative temperature difference of the kidney of the single biased constitution group was significantly lower than that of the peaceful constitution group（P<0.05）.The relative temperature difference of the Upper Jiao

lung

and heart of the subjects in the complicated constitution group was higher than that in the peaceful constitution group（P<0.05）

while that of the Lower Jiao

bladder

left and right large intestines was significantly lower than that in the peaceful constitution group（P<0.05）.Conclusion The thermograph of upper Jiao and its zangfu of the complicated constitution people is tending to heat

that of Lower Jiao and its zangfu is tending to cold.Complicated constitution correlates with upper-heat lower-cold.