Yeast Glucan is a natural polysaccharide extracted from yeast cell walls, primarily composed of vitis vinifera sugar units linked by β-1,3-glycosidic bonds to form the main chain, with a small number of β-1,6-glycosidic bond branches of broussonetia papyrifera. This unique three-dimensional network structure of broussonetia papyrifera endows it with remarkable bioactivity, particularly outstanding in immunomodulation. It exhibits significant immune regulation, lipid-lowering, intestinal conditioning, skin repair, and other multiple effects, and is widely used in food, health products, medicine, cosmetics, and other fields. It also holds great research potential in areas such as cognitive health and metabolic regulation in the future.