Blueberries are rich in sugar, acid and Vc, VE, VA, VB, SOD, arbutin, protein, anthocyanin, dietary fiber and rich K, Fe, Zn, Ca, etc., and also contain Extremely rich in flavonoids and polysaccharides. Anthocyanins and vitamin A can protect eyes; vitamin C can prevent cancer and resist heart disease; pectin can dilute human fat and protect the health of human cardiovascular and cerebrovascular diseases; anthocyanins can resist free radicals, delay aging, and prevent cell damage. Degenerative changes have certain effects on inhibiting platelet aggregation, preventing brain lesions, arteriosclerosis and other diseases. It can also strengthen capillaries, improve blood circulation, weaken platelet stickiness, prevent blood clots, and enhance heart and brain function. , enhance children's bone density and prevent constipation.