The invention discloses a pond crab and vegetable mutualism breeding method. According to the method, a terrestrial vegetable planting technique and a pond crab
aquaculture technique are combined, vegetables are planted on the water surface, pond crabs are bred under the water surface,
nutrient substances in a pond are absorbed by the aid of the vegetables, water
eutrophication degree is reduced,water is purified, shading and cooling effects in a high-temperature period are achieved, good ecological environments are provided for the pond crab,
nutrient substances such as inorganic salt decomposed by residual feed baits fed in the breeding process of the pond crabs, excrement of aquatic animals,
aquatic plant remains and the like are continually provided for growth of the vegetable, mutualism effects are achieved, benefits are increased,
ecology is improved, and environments are protected. According to the breeding method, breeding water can be effectively and sufficiently used, breeding environments are improved, income-increasing ways of farmers are widened, risks of single planting and breeding are reduced, worry of
consumer groups for safety of agricultural product quality is eliminated, and market competitiveness of agricultural products is enhanced.