Mangrove area is an area overgrown mangrove in a natural or artificial, to maintain the environmental sustainability of coastal areas. In addition to maintaining the ecosystem of biodiversity, the mangrove area also has a role to social-economic, and socio-cultural. Rembang regency is one of the districts on the north coast of Java which has a large mangrove area. However, due to the high economic activity in the region of Rembang Regency, the mangrove area becomes less and damaged. This research to describe how environmental policy to manage mangrove area in Rembang regency with qualitative descriptive approach. The result is the role of government and society gradually able to restore mangrove ecosystem. Moreover the district government through Environmental Agency has made a masterplan for the development of mangrove ecotourism in Pasarbanggi Village. The existence of sustainable mangrove conservation has a positive impact on the environment and society.