Tremella fuciformis is a species of fungus; it produces white, frond-like, gelatinous basidiocarps (fruiting bodies). It is
widespread, especially in the tropics, where it can be found on the dead branches of broadleaf trees. This fungus is commercially cultivated and is one of the most popular fungi in the cuisine and medicine of China. Tremella fuciformis is commonly known as snow fungus, snow ear, silver ear fungus, and white jelly mushroom.

Tremella polysaccharide is a basidiomycete polysaccharide immune enhancer, which can improve the immune function of the body and promote white blood cells.The experimental results showed that tremella polysaccharides could significantly improve the phagocytosis of mouse reticuloendothelial cells, and could prevent and treat the leukopenia induced by cyclophosphamide in rats.Clinical use for tumor chemotherapy or radiotherapy caused by leukopenia and other causes caused by leukopenia, has a significant effect.In addition, it can also be used to treat chronic bronchitis, with an effective rate of over 80%.