According to Apple Green Health Network, soybean juice is a kind of local snacks in Beijing. Using mung bean as raw material, it is made through many processes such as boiling beans, grinding beans, starch separation and fermentation. The color is gray-green, the taste is sweet and sour, and it has a unique Beijing flavor. Soybean milk is made by adding water to soybeans, grinding, filtering and boiling. It is milky white or yellowish in color, fragrant in taste and rich in protein and vitamins. Although both of them are made of beans, they are obviously different in making method, color and taste.