The nutritional value of crabs is very rich, crab meat contains a variety of vitamins, which contains vitamin A are higher than other aquatic animals, crabs contain vitamin B2 is 5 to 6 times the meat, 6 to 10 times higher than the fish, 2 to 3 times higher than the eggs. It also contains more vitamin B1 and phosphorus than the average fish.

Generally every 100 grams of edible part of the crab contains 17.5 grams of protein, 2.8 grams of fat, 126 milligrams of calcium, 182 milligrams of phosphorus, 2.8 milligrams of iron. In addition to being rich in calcium, the shells of crabs also contain crab red pigment, crab yolk pigment and so on. In recent years, research has found that eating crab meat and resistance to tuberculosis, eating crab to help the recovery of tuberculosis has a great help.