The function of double-deacidified apple juice in beverages is to increase nutrition and prevent corrosion. Apple juice is a drink with high dietary fiber. Adding double-deacidified apple juice to the drink can supplement nutrition and stimulate appetite. Vitamin C in apple juice is a good oxidant with antiseptic effect, and apple is a four-season fruit, so it is easy to get raw materials, fresh and popular for juicing. The higher the proportion of apple juice in the beverage, the higher the cost, the better the taste and healthier it is.