As a delicious food, crabs have been favored by people since ancient times. Crabs are rich in nutrients, but when steaming crabs, you should pay attention to them. After the water is boiled, it takes about 20 minutes to kill the bacteria in the crab meat. In addition, eat crabs must be removed.

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Crab (páng xiè): Fauna, Arthropod, Crustacea, Soft Crustacea, soft armor, Decapoda, Gastropoda, Anura. It is a crustacean. Its body is protected by a hard shell and breathes through its gills. Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab. Most kinds of crabs live in the ocean or offshore areas, and some live in fresh water or land. They rely on the mother crab to give birth to small crabs, and every time the mother crab will lay a large number of eggs, the number can reach more than one million. Crabs rely on the geomagnetic field to judge their own direction. China has a long history of eating crabs, which is recorded in Yi Zhou Shu by Wang Huijie and Zhou Li Tian Guan's bumper harvest man.

The amount of genetic material of this kind of organism is complex and varies greatly, often as many as 100 pairs. Common crabs are hairy crabs (river crabs, hairy crabs, blue crabs) and swimming crabs. China is rich in crab resources, among which the hairy crabs produced in Taihu Lake, gaoyou lake and Yangcheng Lake in the lower reaches of the Yangtze River are top grade.