Chinese medicine soup is the most commonly used form of preparation, the quality of the soup is directly related to the clinical effect of treatment, so we must master the correct decoction of Chinese medicine soup, so as to maximize its therapeutic effect. In the family decoction process must pay attention to the following aspects of the problem: 1, decoction utensils: decoction utensils to casserole as well, because the material of the casserole is stable, will not be chemically reacted with the drug ingredients, its heat transfer is uniformly moderate, which is also one of the reasons why it is used since ancient times to the present day. In addition, you can also use enamel pots, stainless steel pots and glass fryer. But can not use iron pots, copper pots, mainly because of the chemical nature of iron or copper is not stable, easy to oxidize, in the decoction of medicine can be with the chemical components contained in traditional Chinese medicine to react and affect the efficacy. 2, decoction water: decoction water must be odorless, clean and clarified, containing few minerals and impurities. Generally available clear spring water, river water and tap water, well water must be selected water quality is better. How much water: according to theoretical projections, the amount of water should be added for the drink water absorption, decoction process evaporation and decoction of the total amount of liquid required. Although it is difficult to be very precise when adding water in practice, at least the amount of water should be determined according to the texture of the tablets, water absorption and the length of the decoction time. Generally speaking, the amount of water used is about 2 centimeters after the tablets are properly pressurized and the liquid surface is submerged over the tablets. The hard texture, sticky, or need to decoct for a long time the amount of water can be slightly more than the general drug, the texture is loose, or the active ingredients are easy to volatilize, the decoction time is shorter drugs, the liquid surface submerged drugs can be. 3, soak before decoction: Chinese medicine tablets soak before decoction is conducive to the full dissolution of active ingredients, but also can shorten the decoction time, to avoid the decoction time is too long, resulting in part of the active ingredients depletion, destruction of too much. Most of the drugs should be soaked in cold water, general drugs can be soaked for 20-30 minutes, seeds, fruit-based drugs can be soaked for 1 hour. Summer temperatures are high, soaking time should not be too long, so as to avoid corruption and deterioration. 4, decoction fire and time: decoction of Chinese medicine should also pay attention to the fire and decoction time appropriate. Decoction of general medicine should be the first martial arts fire (fire) after the fire (fire), that is, before the boil with a large fire, after the boil with a small fire to maintain the state of micro-boiling, so as to avoid overflowing or too quickly boil dry juice. As for the control of the fire and time, it depends mainly on the nature of different drugs and texture, usually antidote and other aromatic drugs, generally use the fire to boil quickly, switch to the fire to maintain 10 to 15 minutes or so, in order to avoid a long time to cause the aroma of volatilization, loss of medicinal properties; and tonic drugs in the boiling, with the fire to maintain 30 to 40 minutes, so that the active ingredients are fully dissolved. 5, the number of decoctions: Generally speaking, a dose of medicine can be decocted three times, the least should be decocted twice. Because the active ingredients of the drug when decocting will first dissolve in the aqueous solution that enters the tissue of the herb, and then diffuse into the aqueous solution outside the herb. By the time the concentration of the solution inside and outside the herb reaches equilibrium, the active ingredients are no longer dissolved due to osmotic pressure equilibrium. At this point, only by filtering out the solution and refilling the decoction with water can the active ingredients continue to dissolve. In order to fully utilize the herbs, to avoid waste, a dose of medicine is best to decoct twice or three times. 6, into the drug method: general drugs can be decocted at the same time, but some drugs due to its nature, performance and clinical use of different, different decoction time required. Some also need special treatment, and even the same drug due to different decoction time, its performance and clinical application there are differences. Therefore, the decoction of soup should also pay attention to the method of human medicine. (1) first decoction: shells, crustaceans, fossils and most mineral medicines, such as oysters, magnetite, etc., because of its active ingredients are not easy to decoct, should be first decocted for about 30 minutes before incorporating other medicines with the decoction. There are also some traditional Chinese medicines with high toxicity, such as epiphyllum, raw half-summer, strychnine, etc. These medicines should also be decocted first to reduce their toxicity and ensure the safety of medication. (2) after the next: flowers, leaves, and some of the rhizomes and other drugs because of their active ingredients are easy to volatilize or destroy when decocted and intolerant of decoction, such as peppermint, saffron, rhubarb, senna, etc., the drug should be after the next, to be decocted by the other drugs and then included in the decoction, decocted for 5 to 10 minutes can be. (3) package decoction: a certain kind of medicine will be wrapped up with gauze, and then decocted together with other medicines. There are three main types of drugs that need to be wrapped for decoction, one is fine seed drugs, such as psyllium, Drabanemerosa hebecarpa, Celosia argentea, etc., the decoction is particularly sticky, such as not wrapped for decoction, it is easy to stick to the pot, and the drug juice is not easy to filter out: secondly, there are some drugs, such as pueraria, Hai Jinsha, Zaoshin soil, etc., the decoction is easy to overflow or sedimentation, and need to be wrapped up for decoction; thirdly, there are some drugs with fluffy hairs, such as convolvulus, loquat leaves, etc., such as not wrapped for decoction, decoction will not be easy to filter out, and will stimulate the drug after service. It is not easy to filter out, after serving will irritate the throat, causing coughing, vomiting and other side effects. (4) Separate decoction: some valuable Chinese medicines such as ginseng, cordyceps, antler, etc. should be decocted alone or studied finely, otherwise it will be easy to cause waste. (5) Melting: gelatinous drugs such as antler gelatine, Colla Corii Asini, etc. should not be decocted with other general medicines, and need to be put into a container of stewed water, or boiled in a small amount of water, and then blended into other drugs with the service. (6) brewing: should not be decocted drugs (such as manganese nitrate), liquid drugs (such as bamboo lee, ginger, etc.), it is appropriate to use boiled water or mixed with other medicinal liquids can be.