This study aims at promoting community activities in life. And analyzing active communities of three case(modugol, noddle, keundul), we derived the common characteristics: value, mediator, space, and contents. Based on these common characteristics, this study suggests four basic policies to continue the communities: 1) daily lives based on living culture 2) unity that shares various experiences with residents and produces cultural middle class 3) voluntary participation that develops communities continually 4) developing local community culture by strengthening many types of community culture and reflecting characteristics of local culture and space. Based on the policy directions, this study suggests following specific policy plans to maintain communities successfully. First, for the constant and successful community activities, we should find out and cultivate the mediator who can actually make the community and sustain it steadily. This policy support requires cultural sources, consulting, and analysis as well as needs, community's vision and plan. After the mediator training, space, education, and budget support should be met. Second, the study proposes that mediators should classify into three groups of public institution, artist group, and resistants by leading subject, and apply the appropriate plans. Finally, it suggests that the public agencies should share their cultural mind and interact their projects that are related to promoting communities.