In recent years, population inflow and population in Kaohsiung has constantly increased. Besides, every shopping mall and department store has discovered that the consumption in Kaohsiung has improved as well. As a result, density of shopping mall and department store in Kaohsiung appears to be high and competitive. This study indicates that it is important to analyze the consumers in order to find and understand consumer insight. Includes where are the consumers are located, how the consumers¡¦ demographic variables distributed , consumers¡¦ needs ,buying behavior of consumers and what factors influence the way they choose shopping mall and department store.This study aims at the consumers of shopping mall and department store. By using questionnaire to describe different living style and using living style variables to segment the market. Then to further depict demographic variables and consumer behavior features in every living style segment in order to further understanding the shopping mall and department store consumers. This questionnaire survey has analyzed 338 copies. It shows that the majority of the shopping mall and department store consumers in Kaohsiung are age around 20-29, single female, occupations as students or in service industry. And by using cluster analysis, living style as a fundamental factors, to divide the consumers of shopping mall and department store into four group, home-valued type, information-gathering, price-calculated type and impulse shopping. Finally, the study discussed the similarity and difference between these groups.