Toadstool Grass can be called toadstool grass, lychee grass, because of the uneven leaf skin, shaped like toad skin, so it is also called toadstool grass, has the effect of clearing heat and detoxification (clearing the body of heat and poisonous evil), cooling the blood to dissipate blood stasis, and promoting water retention and elimination of edema (to facilitate urination and eliminate edema). Litchi grass is pungent and cool in nature, with the effects of clearing heat and removing toxins, cooling blood and dispersing blood stasis, inducing diuresis and eliminating oedema. It is often used in treating colds and fever, sore throat, lung-heat cough, coughing up blood, urinating blood, leakage (excessive menstruation or dribbling), hemorrhoidal hemorrhage, ascites, nephritis with edema, leukoarthritis (turbidity of urine such as white pulp), dysentery, carbuncle, swollen sore, and poisonous diseases. The adverse reactions and contraindications of the drug are not clear, such as the existence of allergies to the drug should be avoided. During the use of the drug need to avoid tobacco, alcohol, spicy stimulation of food. The drug should be used under the guidance of a professional Chinese medicine practitioner to identify the evidence, and should not be used on its own.