Brassica oleracea L.var. italica Plenck is an annual or biennial herbaceous plant in the Brassicaceae family, belonging to the Brassica genus. It has a thick base of the main root and a well-developed root system, mainly distributed in the 30 centimeter plow layer; The surface of the flower stem is smooth; The cotyledons are inverted heart-shaped, while the true leaves are green ovate with white powder on the surface. The stems and leaves are usually small and green; The flowers are yellow, and the inflorescence stems are fleshy. The flowering period is in June or September. Because the broccoli is native to Italy along the Mediterranean coast of Western Europe and looks like a flower, it is called "broccoli".