Salvia miltiorrhiza is also known as red ginseng, red root, etc. Perennial herb with thick roots and red outside. The stem is 40-80 cm tall and villous. The leaves are often

compound; there are 1 to 3 pairs of leaflets, oval or oval-ovate, with hair on both sides. Verticilliums with 6 to many flowers, forming terminal or axillary pseudoracemes with dense glandular hairs or villous hairs; the bracts are lanceolate, the calyx is purple, has 11 veins, is about 11 mm long, and has glandular hairs outside. 2. Lip shape, the upper lip is broad and triangular, with a tip at the top. 3 small converging tips, the lower lip has 2 teeth, triangular or nearly semicircular; the corolla is blue-purple, 2 to 2.7 cm long, with hair rings inside the tube, the upper lip is sickle-shaped, the lower lip is shorter than the upper lip, 3-lobed, with the middle Lobe is largest; stamens attach to base of lower lip. The small nuts are black and oval. The flowering period is from April to June; the fruiting period is from July to August. It is a dicotyledonous plant of the Lamiaceae family, with dry roots and rhizomes. Mainly produced in Anhui, Henan, Shaanxi, Shandong and other places.

Salvia miltiorrhiza is divided into white-flowered salvia miltiorrhiza and purple-flowered salvia miltiorrhiza, which are judged based on the color of their flowers. Salvia miltiorrhiza is relatively rare and is an endangered Chinese herbal medicine. Now the main production area is Laiwu area in Shandong Province. The cultivation of Salvia miltiorrhiza has applied for a national patent and a national geographical landmark certification trademark.