Abstract
A purpose of this paper is to model a decision making process from the view point of Service engineering. We lead to consumer's change of internal state and lead to consumer buying behavior by Kansei information on the post card. In this experiment, we revealed consumer take a decision making based on the trust relationship with laundry owner. It means that to keep having a relationship with consumers by using information media leads to create a buying behavior of future and sales. Moreover, we got actual data of buying behavior in store experiment. In a series of these behaviors, we visualized consumer's decision making process by Text Mining. As a result, we revealed that consumers processed 6 factors, which are concerned with their daily life and modeled 6 factors decision-making process.