So what? First of all, licorice has been used as medicine for a long time. As early as more than two thousand years ago, Shennong Herbal Classic listed it as a good medicine. Tao Hongjing, a medical scientist in the Southern Dynasties, respected licorice as "the old man of the country" and said: "This grass is the king of many medicines, and there are very few people who don't use it in ancient books." "the country is old", that is, the name of the empire. The reason why Ural Glycyrrhiza uralensis Fisch is regarded as the "imperial doctor" of medicine is just as Li Shizhen explained in Compendium of Materia Medica: "Among all the medicines, Ural Glycyrrhiza uralensis Fisch is the king, treating 72 kinds of milk stone poisoning, resolving 1,200 kinds of plant poisoning and reconciling various medicines, so it is called" the old country ". According to the determination, the content of glycyrrhizic acid in licorice is about 10%, and there are many components such as mannitol and glucose. Moreover, licorice is actually a very common Chinese herbal medicine, and ancient Chinese medicine has a deep study on the efficacy and use of licorice. Traditional Chinese medicine shows that Glycyrrhiza uralensis Fisch has the functions of relieving pain, clearing away heat and toxic materials, invigorating spleen and qi, resolving phlegm and relieving cough, and harmonizing various medicines. Therefore, Glycyrrhiza uralensis Fisch can be used for carbuncle, swelling and sore, abdominal fatigue, acute pain in limbs, weakness of spleen and stomach, cough with excessive phlegm, palpitation and shortness of breath, and relieve drug toxicity and strengthen body. From the above introduction, we can know that licorice can be used to make tea. In addition, western medicine pharmacology found that licorice has the benefits of anti-inflammatory and anti-allergic reactions, so it is mainly used as a moderator in western medicine clinic. Cough and phlegm, treat sore throat and laryngitis; Glycyrrhiza uralensis Fisch or glycyrrhetinic acid has the function of deoxycorticosterone, which has a good effect on chronic adrenal hypofunction. Glycyrrhiza uralensis preparation can promote the formation and secretion of gastric mucus, prolong the life of epithelial cells, and has anti-inflammatory activity, which is often used to treat chronic ulcer and duodenal ulcer. Licorice flavonoids have anti-inflammatory, antispasmodic and antacid effects. Licorice is also one of the main raw materials in Ren Dan.