Wild blueberries grow in the virgin forest in Daxing 'anling, north of 52 degrees north latitude, with blue fruits, delicate pulp and tiny seeds. [ 1]? The average weight of blueberry fruit is 0.5～2.5g, and the maximum weight is 5g. The fruit is beautiful in color, pleasing to the eye, blue and wrapped with 1 layer of white fruit powder. The flesh is fine, the edible rate is 100%, and it is sweet and sour, and has a pleasant aroma, so it is a good fresh food. Wild blueberry is delicious and nutritious, far away from live zone, without any pollution, and can resist the cold of minus 50℃. Its roots grow in frozen soil all the year round, and it ripens at the end of July and the beginning of August every year, and the collection period is only about half a month. It is the best-selling and most expensive wild fruit in the world at present. As the best of berries, blueberry is listed as one of the five health foods for human beings by FAO.