The decoction time is related to the texture of Chinese medicines and the parts of the body where the medicines act, therefore, the decoction of Chinese medicines should be determined according to the situation and should not be generalized. 1. Sweating and relieving (relieving the body surface of evil qi by sweating) medicines and medicines with light and clear texture: the decoction time of such medicines should not be too long, so as to avoid volatilization of the medicinal effect. 2. Expensive herbs, such as antelope horn and rhinoceros horn, need to be decocted separately. 3. Mineral and shell medicines whose active ingredients are difficult to dissolve in water: such medicines can be decocted first after breaking them up. 4. Poisonous medicines: poisonous medicines, such as epiphyllum, caudice, etc., need to be decocted for a long time in order to reduce toxicity. 5. Aromatic drugs: these drugs are easy to volatilize the active ingredients for a long time and reduce the efficacy of the drug, which need to be put in after, such as sand nuts, mint and so on. It is recommended to decoct Chinese medicines under the guidance of a professional Chinese medicine practitioner, do not take medicines on your own, so as not to delay the condition.