Blueberries are more nutritious than apples, grapes and other fruits, and are called "the king of fruits in the world". Blueberries have a pleasant smell and can be eaten fresh. Blueberries have high nutritional value, and are rich in butyric acid, antibacterial components, dietary fiber, pectin, fruit acid, calories, linoleic acid, vitamin A, vitamin C and vitamin E, etc. Especially the vitamin content is higher than other fruits. At the same time, high content of trace elements is indispensable for nutrition and health care. Each gram of blueberry contains 400-700 mg of protein, 220-920 mg of calcium, 98-274 mg of phosphorus, 0/4-249 mg of magnesium/kloc-0, 2. 1-4.3 mg of zinc, 7.6-30 mg of iron and 2.0-3 mg of copper. It can also be eaten with food, beverage, medicine and other raw materials. Blueberries can relieve allergic symptoms such as pollen allergy, and they can also prevent and treat colds. Blueberries are like a protective barrier, which can maintain the normal elasticity of human blood cells, enhance human blood circulation, bring direct benefits to organs and systems in various parts of the body, and enhance cell vitality. For white-collar workers or people who have been exposed to the sun for a long time, eating more blueberries has a maintenance effect. Anthocyanins contained in blueberries can prevent skin from being damaged by excessive sun exposure from the outside to the inside, and make skin smooth and shiny.