Green mung bean is a kind of leguminous plant, which has more than 2000-year planting history in China. As the main exporting country, China has many districts to cultivate it, such as Neimenggu, heilongjiang, jilin ect. The seed and stem are widely used in food processing and sprouting. The peel of mung beans have the function to detoxify. So mung bean soup always is the summer drink, which are popular in all the people. Besides, mung beans are used for mung bean snacks, such as mung bean cake , sweetened bean paste, ect..