Objectives: To study the features of appetite and dining habit according to Sasang constitution. The results of this study will be helpful to diagnose a Sasang constitution. Methods: There were 588 patients (248 men, 340 women) who answered questionnaire and were diagnosed by the Sasang Constitution Specialist at the Constitutional Clinic of Dongguk Bundang Oriental Hospital. Using the responses to the questionnaire and several statistical techniques such as homogeneity test and multiple comparison, we tried to find the characteristics of each constitution depending on its dining behavior. Results & Conclusions: As a result of the analysis of the questionnaire, Taeumin and Soyangin have a heavy appetite (p<0.01), but the appetite of Soyangin and Soeumin tends to be irregular (p<0.01). Especially, the appetite of Soeumin tends to change according to his feelings (p<0.0I). Taeumin and Soyangin eat more and faster in comparison with Soeumin (p<0.01).