This research was conducted in May, 2017 located at Kelurahan Bagan Deli Medan Belawan Subdistrict Medan City North Sumatera Province. This study aims to determine changes in income generated by mangrove crab fishermen before and after the occurrence of mangrove land damage and the efforts of mangrove crab fishermen to increase income due to damage to mangrove in Kelurahan Bagan Deli, Medan Bel…