Fresh Dihuang is the fresh tuberous root of Dihuang, a plant of the family of Ginseng. Taste: Sweet, bitter, cold in nature. It belongs to the heart, liver and kidney meridians. It has the effect of clearing heat and generating fluid, cooling blood and stopping bleeding. It is used in treating heat illness and injury of yin, tongue with reddish-red tongue and irritated thirst, spots caused by warm-heat poison, vomiting of blood, epistaxis, sore throat and sore throat. Fresh Radix Rehmanniae Praeparata in water may not be able to precipitate the active ingredients of the drug completely, and may not be able to give full play to the efficacy of the drug, coupled with the fact that only a single flavor of the drug is used, so the efficacy of the drug is limited. Fresh huangdi is cold in nature. It is easy to injure yang qi and should not be consumed by patients with deficiency of spleen and stomach (weak and cold spleen and stomach). Patients are advised to use medication under the guidance of a doctor, and should not take medication on their own to avoid delaying or aggravating their condition.