The thorn shepherd's purse, line shepherd's purse, four-pronged pole artemisia, pseudo-Su and so on. Thorny mustard spike is the dried flower spike of Thorny mustard of Labiatae family, alias Thorny caper, thread caper, four-pronged pole artemisia, false Su, Thorny mustard spike is slightly warm in medicinal nature, pungent in flavor, and attributed to lung and liver meridian; Thorny mustard spike charcoal is slightly warm in medicinal nature, pungent in flavor, astringent in flavor, and attributed to lung and liver meridian. The chemical composition of thornbeam spike includes volatile oil, flavonoids, organic acids, terpenes, etc. Volatile oil and flavonoids are the main components that play a role.