Rhamnocitrin can enhance the immune function, improve the formation of spleen cells of mice serum hemolysin of chicken red blood cell immune. Rhamnocitrin possesses significant anticataract activity and acts most likely due to its antioxidant property, it shows a significant protection against cloudiness in lenses induced by hydrogen peroxide and hydrocortisone in a dose dependent manner.Rhamnocitrin and kaempferol can augment cellular antioxidant defense capacity, at least in part, through regulation of HO-1 expression and MAPK signal transduction; they not only protect low-density lipoprotein from oxidation but also prevent atherogenesis through suppressing macrophage uptake of oxidized low-density lipoprotein.