The water used to soak the herbs does not usually need to be poured out. Before decocting Chinese medicines, the herbs can be placed in a casserole or tile pot and soaked in cool water for 30 to 60 minutes, which is not only conducive to the precipitation of the active ingredients in the herbs, but also shortens the time of decoction, but the time of soaking should not be too long, especially in the summer, when high temperatures can easily lead to deterioration of the drug. The decoction of Chinese medicine has a great impact on the efficacy, if the decoction method is incorrect, the efficacy of the medicine often fails to achieve the desired effect. After soaking, the medicines are usually decocted on high heat before boiling, and then on low heat for 10 to 30 minutes after boiling. It is recommended that patients in the process of treatment and medical care to ask the doctor in detail about the requirements or contraindications on the decoction, do not be imprudent decoction and affect the efficacy of the treatment.