Auricularia auricula is a kind of auricularia auricula. Because it grows on rotten wood, it looks like a human ear and is black or brown-black, so it is named auricularia auricula, also known as auricularia auricula and tree chicken. This product can be used as both food and medicine. Auricularia auricula originated from the fruiting body of Auricularia auricula, Auricularia auricula or Auricularia auricula, and mostly parasitized on the dead branches of mulberry, oak, elm, poplar and locust. It used to be wild, but now it is mostly cultivated artificially. Tremella, also known as Auricularia auricula, Tremella fuciformis and Tremella fuciformis, belongs to fungi, basidiomycetes, Tremella fuciformis and tremella fuciformis, and is a precious edible and medicinal fungus. Rich in gum, with high foaming rate, it can be made into various sweets and dishes. Wild tremella is produced in Zhejiang, Fujian, Jiangsu, Jiangxi, Anhui, Taiwan Province, Hubei, Hainan, Guangdong, Hong Kong, Guangxi, Guizhou, Yunnan, Shaanxi, Inner Mongolia and Tibet.