Fifty acres of crab pond can earn10 million a year. According to Sina News Network, the profit return of 50 mu of crabs can be calculated according to several specifications, including 20 kg/mu, 60 kg/mu, 1 10 kg/mu, and the average selling price will have a certain gap. Generally, 20 kg/mu is the cheapest, and 60 kg/mu is the best. According to the output of one mu of hairy crabs, it is about 200 kg. Then according to the market price, excluding the cost, the total income is about 1.8 thousand to 20 thousand.