Portunus trituberculatus, commonly known as Portunus trituberculatus and White Crab, belongs to Portunus family of crustacea, and is an important economic crab in China's coastal areas. Its rapid growth and rich breeding profits make it an important breeding variety in coastal areas of China. Portunus usually lives and breeds on the seabed of 3-5 meters, migrates to the deep sea of 10-30 meters in winter, and likes to make holes at the bottom of sediments. Its adaptive salinity is 16‰-35‰, water temperature is 4℃-34℃, PH value is 7-9, optimum salinity is 26‰-32‰, and optimum temperature is 22℃-28℃. Water quality requires fresh and high dissolved oxygen. When the environment is not suitable or the shelling is not complete, there is a phenomenon of self-cutting, and the feet can be regenerated after being cut off.