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Crab is a fishery commodity with a high economic value. The development of crab rearing business is expected to increase in the future. Crab production has decreased, thus it requires the strategy crab rearing business. The purposes of research are to identify internal factors, external factors and to crafting strategies of mangrove crab rearing business use natural method. This result shows that strengths are suitable position area, water characteristic, good product, distribution system, available land, own land, short harvest period, and farming period. The weaknesses are farmer knowledge, lack of fledgling in nature, lack fund, less management and little output. The opportunities are suitable clime, open possibility of market, secure area, and mangrove area. The threats are value sale, agricultural extension, pest attack, input costs, covid-19 effect, assistance government, and crab cannibalism. The suitable strategies to be developed are in quadrant I, namely aggressive strategies.

Strategies of mangrove crab rearing business use natural method (case: Belawan Sicanang Village, Medan City, North Sumatera)