1, decoction apparatus: in the decoction as far as possible to use casserole, stainless steel, glass, enamel and other appliances is preferred, avoid using iron, copper pot. Because the former physical and chemical properties are more stable, not easy to react with the ingredients in the drug to ensure the efficacy of the drug. Iron and copper ingredients are more active nature, easy to react with the ingredients in the drug, affecting the efficacy. 2, soaking method: before decoction, the drug should be placed in the pot, plus clean cold water to soak the drug, add the amount of water to submerge over the surface of the drug 3-5cm, soak for 20-60 minutes is appropriate, so that is conducive to the decoction of the active ingredients of the drug. (The water used to soak the medicine, no need to change the water). 3, decoction method: each dose of medicine boiled twice. The first decoction first boil the soaked medicine with high fire, then change to medium or low fire to maintain the boiling of the medicine; the second decoction add less water (to submerge the surface of the medicine), the same fire as the first decoction. It is best to cover the decoction, in general, the decoction should not open the lid of the pot frequently, otherwise the odor is easy to lose, the efficacy of the drug is reduced. 4, decoction time: after the drug boiling start to calculate the time. Generally speaking, the first decoction will take 20-30 minutes and the second 15-25 minutes; the first decoction will take 40-60 minutes and the second 30 minutes for nourishing and firm-textured medicines; the first decoction will take 6-15 minutes and the second 5-10 minutes for detoxifying, regulating qi, and easy-textured and aromatic medicines. 5.Filtering the medicine: the amount of medicine to be decocted should be decided according to the patient’s condition, age and other specific conditions; the amount for adults is generally about 200-500ml per decoction, and the amount for children is about 1/4-1/2 of that for adults, i.e., 50-250ml. 6.Time of taking: one dose per day, once in the morning and once in the evening. In the morning, take the medicine decocted by the first decoction, and in the afternoon, take the medicine decocted by the second decoction, which can make the concentration of the two medicines in the body and the role played by the two decoctions uniform and reliable. It is also possible to mix the two decoctions and take them twice in the morning and in the afternoon, with a gap of about 6 hours between the two. It is best to finish the medicine on the same day, and it is not advisable to keep it. Nourishing medicines should be taken half an hour before meals; heat-clearing medicines and medicines that stimulate the stomach and intestines should be taken half an hour after meals; other medicines should be taken according to the doctor’s instructions. 7, precautions: Chinese medicine packets often seen with paper or gauze wrapped in another package of Chinese medicine, labeled with the first decoction, after the next, packet decoction, brewing and other words. Be sure to follow the requirements, otherwise the effect of the drug will be affected. The decoction process can be supplemented with the amount of water as appropriate, but it should be stirred constantly to prevent overflow and paste the pot.