Alfalfa, formerly known as purple alfalfa, is widely planted in Eurasia and other countries in the world as feed and pasture for livestock and poultry. Alfalfa stems and leaves are tender and delicious, and contain five kinds of minerals such as vitamin B, vitamin C, vitamin E, 10 and three kinds of plant-specific nutrients such as flavonoids, carotenoids and phenolic acids. Therefore, whether it is green feed, silage, preparation of green hay, processing of grass powder, used in compound feed or compound feed, all kinds of livestock and poultry like green feed best, and it is also the first choice for pig and poultry industry.