Auricularia auricula is mainly produced in China, Sichuan, Yunnan, Guizhou and other regions. It grows on wet and rotten trees and is naturally rich in nutrients. Auricularia auricula has extremely high nutritional value, containing protein, calcium, iron, carotene, vitamin B 1 and so on. It also has anticancer, antibacterial, freckle-removing, anti-aging and other pharmacological effects. Auricularia auricula is also known as the "crown of bacteria" in the food industry.