Gentiana macrophylla, alias: Gentiana macrophylla, Gentiana macrophylla. Perennial herbs, cylindrical roots, large basal leaves, 3-4 pairs of cauline leaves, lanceolate leaves, jointed at the base; In summer and autumn, cylindrical dark blue-purple flowers are open, clustered in the upper axils in a wheel shape, and the lobes are pointed at the top; Long oval capsule. It has extremely high medicinal value and is one of the main drugs for treating rheumatic joint pain. Produced in Inner Mongolia, Ningxia, Hebei, Shaanxi, Xinjiang, Northeast China, Shanxi and other places.