The purpose of this study was to discuss how service quality in sport centers had effects on the motivation of senior citizens going to sports centers. Documentary analysis was adopted as the research method in this study. The results showed, the quality of services was not only the key factor for improving the operational achievement but also one of the reasons for senior citizens going to sports centers. The number of senior citizens with free time and extra money increased who became the most attractive group for sports centers. The study concluded, in order to operate sustainably, the practitioners of sports centers required improving the exercise environment and equipment as well as the quality of services through talent trainings and professional knowledge enhancement. Meanwhile, diverse training and exercise programs, community condensation, and emphasis on the elder care would also improve the motivation of senior citizens participating in leisure sports and further enrich their life of sunset by building healthy and disease-free bodies.