Black fern can be cleaned, boiled in warm water, dipped in sesame sauce, and used to mix cold dishes, which can promote blood circulation, diuresis, stop bleeding, satisfy hunger, and clear away heat and toxic materials. Can effectively improve and treat diseases such as splenomegaly, traumatic hemorrhage, influenza virus, hepatitis, dysentery, burns and scalds. Black fern is a plant with a height of 65 cm, and its rhizome is short and thick, which is suitable for growing in the environment between 16 and 27 degrees.