Fruit juice is a fruit juice product obtained by physical methods such as squeezing, centrifugation and extraction. After processing, most of the nutrients in the fruit, such as vitamins, minerals, sugar and pectin in dietary fiber, remain in the juice. Drinking fruit juice regularly can help digestion, moisten intestines and supplement nutrients lacking in diet. There are two kinds of juice: pure juice and compound juice. As far as pure fruit juice is concerned, it can be divided into two types, one is direct use. Most pure fruit juices are concentrated fruit juices.