The purpose of this two-year project is to understand the process of cooperative service learning and its supporting system for middle-aged and older adults. The first year is to investigate the process of cooperative service learning from the dimension of the middle-aged and older adult learners. The process includes the initial forming factors of the team, how the common goal will be determined together, what learning content and methods will be adopted, the role of each member, the obstacles they will encounter, and the needed assistance. The purpose of the second year study will focus on the dimension of the older adult educational organizations. In this period, we will research the organizations’ viewpoint regarding the cooperative service learning of the middle-aged and older adults, the meaning of the supporting system, and the difficulties when guiding the cooperative service learning. Having summarized the perspectives of both learners and the organizations, the researcher then composes the “Questionnaire of the Cooperative Service Learning of the Middle-Aged and Older Adults”. Following the experts’ evaluation of the importance and feasibility of the questionnaire, the researcher further constructs the cooperative service learning model for the middle-aged and older adults in Taiwan. The method of the first year will be the focus-group interviews. In order to explore the process of the cooperative service learning of the participants, we will select 12 self-learning groups which will provide their learning outcomes as “contribution services” after taking part in “cooperative learning”. Each group will undergo 1-2 focus-group interviews. The total number of participants will be about 144 elders in this cooperative service learning study, while each group contains 5-12 members. The semi-structured interviews will be conducted in the second year of this study. The participants will be the officers, directors or managers of the aforementioned older adult educational organizations that the 12 selected groups are attached to. One to two older adult educational institution personnel from each group will undergo one on one in-depth interview. Therefore, about 24 interviewees will be included in the second year study. After integrating both perspectives of older adult learners and older adult educational organizations, a questionnaire titled “The Meaning of Cooperative Service Learning and the Supporting System for Middle-Aged and Older Adults” will be composed. Furthermore, 12 scholars and experts will evaluate the importance and feasibility of the questionnaire by Delphi technique. Finally, a three dimensional integration, including the elder learners, the educational institutions, and the scholars and experts, will construct “The Elderly Cooperative Service Learning Model” to serve as a promotional reference of the program design for the cooperative service learning in Taiwan.