The development of department stores can be used as an indicator of urban development and prosperity. Therefore, this study uses the customers of Pingtung Pacific Department Store to understand the impact of promotional perceived value and department store service quality on customer satisfaction, and adopts the intentional sampling method to issue paper questionnaires. , a total of 193 valid questionnaires were collected, and then descriptive statistics, factors, reliability and regression analysis were used to verify the relationships between variables. The research results show that the perceived value of promotion activity and service quality had significantly positive impact on customer satisfaction. Beside, service quality had full meditation effect between perceived value of promotion and customer satisfaction, meaning even if substantial feedback such as promotional activities can attract customers, the quality of service is the key to satisfy customers.