Abstract: OBJECTIVE To study the relationship between TCM constitution and sleeping habit in healthy elderly people. METHODS Classification and diagnosis table of traditional Chinese medicine constitution was adopted to investigate and analyze the TCM constitution of the healthy elderly people who are over 80 year-old in Rugao， Liyang and Taicang. Logistic regression analysis was used to study the relationship between TCM constitution and sleeping habit in healthy elderly people. RESULTS Getting up late was positively related with qi deficiency constitution， yin deficiency constitution， qi stagnation constitution and blood stasis constitution. Sleep late was positively related with qi stagnation constitution. Getting up early was negatively correlated with qi deficiency constitution， yang deficiency constitution， yin deficiency constitution， phlegm dampness constitution and blood stasis constitution. Sleep early was negatively correlated with yang deficiency constitution， yin deficiency constitution， phlegm dampness constitution and blood stasis constitution. Sleep disorder was positively related with yang deficiency constitution and qi stagnation constitution. CONCLUSIONS Comparing with sleep late， getting up late causes more biased constitution and greater damage to health， which embodies TCM thought that paying attention to yang qi and taking yang as the root.