Lemongrass (scientific name: Cymbopogon citratus (DC.) Stapf) is a perennial dense clustered fragrant herb in the family Poaceae. Lemon grasslands are produced in regions such as Asia, Africa, South America, and North America, mainly distributed in tropical and subtropical areas. Lemon grass can be used as a whole plant, and fresh or dried plant leaves and stems have a strong lemon aroma. It is widely used as a seasoning for soups and meat products in countries such as India, Vietnam, and Thailand, and can also be brewed into lemon grass tea. Both the whole plant and flowers can be used as medicine, with certain medicinal value.