Three-eyed crab is a kind of crab. Three-eye crab is also called three-eye crab, three-eye crab, red star swimming crab, gun crab, etc. The most remarkable feature is that the head breastplate is spindle-shaped with a slight bulge, and there are three obvious warty bulges on the surface, which mainly belong to warm-water bottom crabs. Three-order crabs are widely distributed in Japan, Hawaii, Philippines, Australia, Malay Archipelago, China and other coastal areas. Their living environment is seawater, and they are mostly found in the muddy seabed with a depth of 10-30 meters.

Three-eyed crabs are delicious and nutritious. Three-eye crabs that have mated and matured ovaries but have not laid eggs have higher nutritional value, and are richer in protein, fat and vitamins, which can be compared with river crabs in autumn and winter. When eating crabs, it is necessary to clean the surface impurities with a brush, remove the inedible parts such as gills, sandbags and internal organs, and steam them at high temperature before eating.