This study adopts the SROI methodology to review, from the perspective of stakeholders, USI’s social impact in increasing children’s reading activity in 2018. The three campaigns include the Philanthropic Library, Meet the Author, and Parent-Child Reading. After engaging stakeholders (mainly through interviews and questionnaires), this study found that children who read Philanthropic Library books experienced outcomes such as improved critical thinking abilities, gained confidence, broadened horizons, improved focus, and greater emotional stability. The Meet the Author events broadened students’ horizons, while the author gained inspiration and a sense of achievement from interacting with students in Lanyu. Changes for children who participated in Parent-Child Reading included reading more books in the future, better reading comprehension, and higher focus when reading. Furthermore, parents and children reading together during the event also improved the quality of their family reading time, and helped parents understand more methods and general knowledge about teaching children.