The growth and development of Auricularia auricula is called a life cycle or generation by basidiospore-mycelium-fruiting body-basidiospore. The sexual reproduction of Auricularia auricula is carried out in the form of heterogamy, and its life history can only be completed by the combination of different mating types of hyphae. Auricularia auricula is a dioecious bipolar mating system controlled by a single factor, which has two different sexes, ten and one. After the basidiospores of different sexes germinate under suitable conditions, they produce mononuclear hyphae, which are called primary hyphae. In the initial stage, the primary hypha is multinucleated, and the multinucleate quickly separates and divides the hypha into multiple monocytes. When two mononuclear hyphae with "ten" and "one" are combined for nuclear matching, a binuclear secondary hyphae is produced, also called binuclear hyphae. Each cell of the secondary hyphae contains two nuclei with different properties, and the binuclear hyphae are locked together, so that the divided two daughter cells contain the same binuclear as the mother cell. It is thicker than primary hyphae, grows faster and has strong vitality. The artificially cultured strains are secondary hyphae. Secondary hyphae absorb a lot of nutrients and water from the surrounding environment, multiply in large numbers, and the hyphae are alternately entangled. Dense hyphae growing in the substrate constitute white fluff visible to the naked eye, that is, mycelium. After a certain period of time, the mycelium gradually transformed into the fruiting body of the propagator, and the primordia of the fruiting body grew on the substrate. By absorbing a lot of nutrients and water from the substrate, the colloidal and elastic auricularia auricula fruiting body is gradually formed. Mature fruiting bodies produce rod-shaped burdens on their ventral surfaces. Basidioids protrude from the sides of four arranged cells, and basidiospores regenerate on branchlets. The basidiospores are ejected by ionic entities through special ejection organs on the fruiting body, blown away by the wind, find a suitable substrate, and start a new life history. Under suitable conditions, the life history of the whole generation takes about 60-90 days to complete.