In the last two years, the market for the river crab industry has declined. The supply of megalopa in the north has exceeded the demand, causing many seedling enterprises to lose money. The breeding diseases of adult crabs in the south have continued to occur, especially this year, the "water shriveled" disease is very serious. This resulted in a large-scale reduction in the production of adult crabs. Some practitioners of the crab industry have lost confidence in this industry, thinking that the prospects of the crab industry are not good, and they have the intention to switch to other industries. In response to this problem, the frontier of aquatic products has analyzed the prospects of this industry and shared it with you here.