The Yangseo Cooperative(良書協同組合) is a book-based cooperative that began in Busan in the late 1970s and spread and operated nationwide in Masan, Daegu, Gwangju, Seoul, Ulsan, and Suwon, and disappeared around 1980. Yangseo Cooperatives are basically based on the purpose and operation method of general cooperatives, but they are distinguished from general cooperatives in that they accompany the political movement organizations. A cooperative is an organization that uses mutual self-help and economic democracy as its basic ideology and philosophy, and basically aims to improve the economic interests and social situations of its members. The Yangseo Cooperative can be said to have lurked and emerged in the form of a cooperative through good books in the special times of the late 1970s. The Yangseo Cooperative was a social movement organization launched by combining social conditions such as the emergence of critical intellectual groups and the rise of publishing movements, including dismissed journalists, with requests to create a public foundation for the democratization movement. Kim Hyung-ki, who learned about the cooperative's philosophy, operation method, and Canadian Antigonish movement at the Cooperative Education Research Institute established by Sister Gabyl, conceived a new type of social movement organization that combines the cooperative and democratization movement. Since then, the Yangseo Cooperative has spread nationwide in a short period of time, which is evidence that the good books-mediated cooperative movement is an opposing social movement organization that bypasses the system of tyranny. Sharing critical thoughts about reality and assimilating into the idea of liberation by awakening readers through good books would have been a sufficient work to be devised and agreed upon by social transformation forces during the dictatorship period when oppression and surveillance were common. Founded in this direction, the Yangseo Cooperative in each region seems to have been a kind of touchstone that reveals the regional characteristics and athletic capabilities of the time by being organized and operated differently according to their regional characteristics. Although it was operated for a short period of time, the Yangseo Cooperative, which showed the characteristics and athletic capabilities of the community in the late 1970s, has been inherited and converted to community movements of various characteristics since the 1980s. This article examined the background and historical context of the emergence of Yangseo cooperatives, away from the level of retrospective of the parties, and confirmed the tradition of cooperatives that led to books and how they are combined with democratic movements through books. It can be said that the nature and meaning of the social movement history of the good books cooperative are examined in the context of the characteristics of the local Yangseo cooperative and the history of the local movement.