Special decoction method refers to the decoction method that is operated according to special operation procedures. Since some components of Chinese medicine are easily soluble in water and some are insoluble in water, some components are easily volatilized after heating, some components are destroyed after long decoction, some are easily pasted and coked after heating, some decoction is thick and easy to boil, which affects the decoction of other medicine components, etc. Therefore, special treatment should be made according to the different properties of the medicine. Therefore, when decocting medicines, special treatment should be made according to the different properties of medicines. The purpose of first decoction is to increase the amount of dissolved drugs, to reduce or alleviate the toxicity of drugs and to give full play to their curative effects, and to clean the liquid. (1) For minerals, crustaceans, animal nails, bones, horns, and hard texture, the active ingredients are not easy to be decocted out of the drug, should be decocted first 15 to 30 minutes. Such drugs are: raw gypsum, cold water stone, ochre, ling magnet, amethyst, raw keel, raw oyster, raw cassia, raw clam shell, raw corrugated seed, turtle plate, turtle nail, dragon tooth, tiger bone, leopard bone, deer horn, buffalo horn, etc. (2) For drugs whose long decoction can relieve toxicity, decoct them for about 30 minutes first. This kind of drugs such as: aconite, epiphyllum, shanglu, raw nanxing, raw semen, etc. (3) For drugs with a lot of sediment, it is appropriate to decoct the juice first and then decoct other drugs with their juice instead of water. This kind of drugs such as: Zao Xin Tu, also Shi Shi Li, glutinous rice root, etc. The purpose of decoction is to reduce the loss of ingredients caused by the long decoction time of drugs. (1) Drugs with aromatic smell and volatile ingredients are generally decocted 5 minutes before the decoction is ready, and then decocted for 4 to 5 minutes. This kind of drugs such as: mint, sand, cardamom, incense, cinnamon, wood, artemisia, Elsholtzia, clove, patchouli, etc. (2) Long decoction of the active ingredients are destroyed drugs such as: hook vine, rhubarb, senna, Xu Changqing, etc. 3.Bag decoction A bag decoction is a decoction of a drug in a gauze bag. The purpose is to reduce the bad irritation to the throat and digestive tract; the second is to prevent the liquid from being cloudy and the juice from being easily decocted. (1) Seed surface mucilaginous drugs, because of its sticky, and mixed into the soup decoction easy to burst the pot, or make the liquid cloudy, the juice is not easy to decoction, so need to package decoction. This kind of drugs such as: scape seed, psyllium, etc. (2) Drugs containing fluff, because the fluff is not easy to clarify, often irritate the throat and digestive tract after serving, so also need to package decoction. This kind of drugs such as: spineflower, etc. (3) For drugs that are small and light (including dispersants) and float easily in soup, decoction is also required to prevent floating and turbidity. This kind of drugs such as: Pu Huang, Su Zi, Silica Sand, Bai Cao Cream, Liu Yi San, Slippery Rock, Dai Clam San, Tian Shui San, Yi Yuan San, Jian Qu, etc. 4, bubble serving For drugs containing volatile oil, easy to taste, and the dosage is small, can be used to boil half a cup of water, or a part of the decoction while hot soak (must be covered to reduce volatilization). This kind of drugs such as: saffron, senna, fat sea, etc.. 5, melt (dissolve) where the colloid, paste, sugar, viscous and soluble drugs, as the same decoction is easy to sticky pot boiling anxiety, and adhere to other drugs, affecting the dissolution of the active ingredients. Therefore, it should be placed in the dregs of the liquid after the other drugs are decocted and slightly boiled or stirred while it is hot to dissolve them. This kind of drugs such as: gum, turtle plate gum, deer horn gum, turtle shell gum, loquat leaf paste, honey, syrup, mannitol, xuanming powder, etc. 6, another decoction (another stew) Some valuable drugs, in order to try to preserve its active ingredients, reduce the same decoction by other drugs to absorb, then need to be decocted separately. This kind of drugs such as: ginseng, American ginseng, etc. In addition, for some valuable and difficult to decoct the smell of drugs such as antelope horn, it should be cut into small slices and decocted for 2 hours, or use water to grind the juice or file into a fine powder to mix. 7, into the punch for liquid Chinese medicine, placed in other drugs decoction, often affect its composition. Therefore, you should wait for other drugs to be decocted to remove the slag and take the juice, and then take it into the mix. This kind of drugs such as: bamboo leach, yellow wine, fresh lotus root juice, ginger juice, pear juice, fresh raw earth juice, etc. 8, punch For precious drugs or ingredients easily destroyed drugs, it is appropriate to be powdered punch. These drugs such as: pearl, niuhuang, cinnabar, amber, borax, sand, mannite, Tianqi, musk, etc. 9, decoction boiling some drugs are larger and lighter, the need for water or water absorption is very large, it can be selected, plus the appropriate amount of water decoction 2-3 times, filter out the liquid, used to decoct other drugs. This kind of drugs such as: loofah, bamboo rhizome, lantern grass, tongcao, big belly skin, etc.