This study explores the importance of value cocreation mechanisms in social enterprises and the key factors influencing their sustainability. The author selected Duofu Care & Service, the first Taiwanese social enterprise to be listed on the Taiwanese over-the-counter stock market, as the subject of a case study. This study analyzes how interaction mechanisms, value propositions, support systems, operant resources, and value-in-use interact in the cocreation of value between producers and consumers of a service. Social enterprises often implicitly adopt value cocreation theory in service-dominant logic to adjust their strategies, proposing appropriate value propositions to attract consumer engagement, using support systems to facilitate value cocreation, and developing mechanisms for interaction between cocreation participants. By providing a fresh perspective beyond social impact theories to evaluate social enterprises, this study highlights the crucial role of value cocreation mechanisms in social enterprises, clarifying the distinct components that constitute these mechanisms. Therefore, this study fills a gap in the literature regarding the value cocreation mechanisms that contribute to evaluating the social impact of social enterprises.