The eating behaviors of Taiwanese have been changed by the culture interflow. The quantity consumed of coffee grew very rapidly and new coffee chain sprang up in recent years in Taiwan. The purposes of this study is to understand the consumer behavior, look for factors affected the levels of importance of service quality customers perceived, and explore the relation with customer satisfaction. Face to face questionnaire survey was used in this study. The places of the survey were at two branch stores of different coffee chain shops. 600 valid samples were collected. The average frequency of visit for the most customers was less than three times monthly. The main consuming motive was to date with friends. The most important reason of selecting coffee shop was convenience of traffic. When customers were dissatisfied, they will complain to shop assistant first. The top 3 important reasons for customer value to service quality were ”cleanness of shop front and rest room”, ”interior decoration” and ”hygiene and safety of food”. The importance of service quality varied from ”level of education” and ”monthly expenditure”. The customer satisfaction varied from ”gender”, ”level of education”, ”vocation”, and ”monthly expenditure”. The importance of service quality was positive related to customer satisfaction. According to the study result, it is suggested that the chain coffee shops may take different promotions by customers' demographics and effective marketing strategies should be generated.