Hypsizygus marmoreus (Peck) H.E.Bigelow], also known as the jade mushrooms, spotted jade mushrooms, the real shimeji mushrooms, the texture of the crunchy and tender, fresh taste, fresh, with the taste of the sea crab, in Japan is called the "crab taste mushrooms", "sea fresh mushrooms". In Japan, it is called "Crab-flavored Mushroom" and "Sea-fresh Mushroom". It belongs to the white mushroom family, Amanita muscaria, and has a medium to large cotyledon. Nowadays, there are two strains, light gray and pure white, and the white strain is also called "White Jade Mushroom" and "Jade Dragon Mushroom", which is mostly cultivated in factories. The cap is 3-15cm in diameter and grows in clusters on dead and decayed wood of broad-leaved trees in late summer and fall. It is an excellent edible fungus in the north temperate zone. It is a kind of low-calorie and low-fat health food. Sea-fresh mushroom, a low-temperature herbaceous or woody white-rot fungus, has high nutritional and medicinal value, white in color, with plump flesh, delicate texture, fragrant smell and delicious taste. The protein of seafood mushroom has a complete range of amino acids, including 8 kinds of essential amino acids, and also contains several kinds of polysaccharides, and the hot water and organic solvent extracts of its substrate have the effect of removing free radicals from the human body, so the regular consumption of seafood mushrooms has the effect of anticancer, anticancer, improving immunity, preventing aging, and prolonging the lifespan. It is a kind of edible fungus with high nutritional value and medicinal value, with white color, plump flesh, delicate texture, fragrant smell and delicious taste. Its mycelium growth optimal temperature 24 - 26 ℃, the optimal temperature for the growth of the substrate 8 - 18 ℃. Cultivated in fall and winter, the mushroom age period of about 50 days, the growth cycle of 100 days, the biological conversion rate of 60-80%. Now the market selling price per kilogram of fresh products 20 to 30 yuan.