The purpose of this study was to examine the effects of interior landscape that influenced satisfaction of visitors at a department store. In order to answer the question "How does satisfaction of visitors affect user's preference of a store?" this study aims at identifying variables of interior landscape effects and studying their relationship with preference by surveying actual users of indoor landscape of department stores. Results generated by identifying and analyzing the impact of interior landscape effects on preference, their direction, size and relative importance may be used as criteria in planning and design when introducing interior landscape at department stores and utilized as useful knowledge. Furthermore, they may be basic material for introducing interior landscape as a part of environment marketing strategy in commercial places. The study aims at identifying impact direction on the preference of department stores, impact size and relative contribution of impact. The study results will provide knowledge useful in introducing and promoting interior landscape. In the course of this study, participants in the survey were selected form among visitors to the interior landscape of a department store. The main method of data collection was questionnaires utilizing a Likert scale and the collection of use type and demographic data. The Cronbach's alphas program was used to measure the reliability of Likert scales. Data was analyzed using the mean difference test, Pearson's correlation analysis, and multiple linear regression method. The summarized results of this study follow. Based on the literature review the effects of department store-interior landscape were divided into four distinguished effect-variables of interior landscape: Visual Image (X1), Comfort (X2), Stay Quality (X3), and Convenience (X4). Therefore, for department stores, further study of comfortable interior landscape-facilities is necessary and optimal consideration of a visitor's satisfaction is necessary. The research results suggest that a guideline for the creation of interior landscape of department store would be valuable.