This study sought to overcome problems among stakeholders in the community and to find ways to sustain cooperation with Jeju Free International City Propel Policies. Thus, this study selected six groups (local government, development center, business group, press group, citizen group, and academic group) deemed to have important influence over Jeju Free International City. It also conducted a survey focusing on cooperation theory and six preconditions that can sustain cooperative relations among stakeholders. Results of the survey revealed positive or negative perceptions on mutual reliance, possibility of partnership, feasibility of the policy agreed upon by the groups, perception on cost-cutting followed by policy cooperation, selection of the leader group to sustain the cooperative relationship, and shared vision of the policy according to each group’s stake. Consequently, this study proposed ways to sustain cooperative relationships among groups based on the abovementioned results.