Blueberries contain sugar, acid, protein, fat, amino acids, dietary fiber and VC, and are also rich in minerals such as potassium, iron, zinc, calcium, germanium, copper and rich in VE, VA and VB. Pectin, SOD, anthocyanin, nicotinic acid, carotenoids and other special components in a small amount of fruits. Therefore, blueberries are recognized as very nutritious fruits, and the value of blueberries is particularly great. Eating more blueberries can protect eyes, enhance immunity and enhance resistance to infectious diseases. Blueberries also have antioxidant function and enhance people's memory.