Mulberry leaf is the dry leaf of mulberry family plant, and is the main food of silkworm. Mulberry leaf is the king of plants, rich in 17 kinds of human amino acids, crude protein, crude fat, is confirmed by the Ministry of Health "medicine and food homology" plant, is listed by the International Food and Health Organization "one of the top ten human health food in the 21st century", has become a new source of green food for human.

Studies show that mulberry leaves also contain pigments, organic acids, flavonoids, alkaloids, polysaccharides and other biological functional components. Flavonoids are one of the main physiological active components in mulberry leaves, and the total flavonoid content is much higher than that of other plants. In addition, mulberry leaves also contain morgenin, an isotropic flavonoid compound that has been shown to have strong anti-tumor effects. In addition, mulberry leaf flavonoids also have a certain role in regulating blood glucose。

As mulberry leaves have rich nutritional value characteristics, as early as 1992, the Ministry of Health of Our country has been listed as both medicine and food plants, as a green, healthy food has been promoted. In food, mulberry leaf is used for mulberry leaf tea development. The main functional substances of mulberry leaf tea are alkaloids, tea polyphenols, anthocyanins and chlorogenic acid, etc. Compared with ordinary tea, it is rich in polysaccharides, amino acids and minerals, which is more conducive to the dissolution of effective substances and easy to be absorbed by the human body.