1, ginger eight wax is also called foreign ginger. It is a perennial herb. It is1-3m high, with massive underground stems and fibrous roots. Stems erect, branched, white hispid or setose. Leaves are usually opposite and petiolate, but the upper leaves are alternate. The lower leaves are ovoid or ovoid-elliptic. The flower head is large, few or many, solitary at the branch end, with 1-2 linear lanceolate bracts, erect, tongue-shaped flowers usually 12-20, yellow tongue, spreading, oblong, tubular flower corolla yellow, 6 mm long. Achenes are small and wedge-shaped with 2-4 hairy conical flat awns at the upper end. Flowering in August-September.

2. Ginger is the fresh rhizome of Zingiber officinale. Ginger is slightly warm and spicy. Enter lung, spleen and stomach meridians. The chemical constituents of ginger include volatile oil, terpenoids, resins, amino acids, flavonoids and so on. Among them, volatile oil is the main active ingredient. According to the 20 15 edition of Pharmacopoeia of the People's Republic of China, the content of volatile oil in ginger should not be less than 0. 12%(ml/g), the content of 6- gingerol should not be less than 0.050%, and the content of 8- gingerol and 10-. The content of 6- gingerol in ginger slices shall not be less than 0.050%.