From the perspective of biological properties, Chaga is a highly valuable medicinal fungus. It lives on living birch trees and grows by sucking nutrients from the birch trees. Birch sap is a very good health drink. , can prevent many diseases. Because it grows in the cruel environment of the cold zone, chaga has higher biological activity. Even if the birch tree dies, the mycelium in its seeds can survive for up to six years. Of course, compared with other medicinal fungi, the application level of Chaga in my country is still relatively low and needs to be further popularized.