Curcuma longa scientific name: endive, also known as: chicory, endive, curcuma longa, endive, wild endive, wild endive, endive, endive, endive, chicory, invasive hemp and so on, due to the different geographical areas and different names, most areas of our country have. Often harvested in the spring in March - June before flowering. The curly endive has the efficacy of clearing away heat and detoxification, cooling the blood and inducing dampness, reducing swelling and draining pus. It is good for sore throat. The edge of the leaves of curculio is spiky and sharp-toothed, mostly gray-brown, with milky juice overflowing when the leaves are broken, and its stem grows upright, hollow in the middle, reddish-white in color. Li Shizhen in the "Compendium of Materia Medica" recorded: "Spring growth seedlings, there are red stems, white stems of two kinds. Bitter stems hollow and brittle, after breaking the white juice out taste bitter, cold, non-toxic main treatment of the five evil organs, anorexia and stomach pain, with the efficacy of clearing heat and detoxification.