Stevia (commonly known as stevia, stevia glycosides) is a new natural sweetener refined from the compositae herb stevia (or stevia leaf), which has been used as an herb and substitute sugar in South America for hundreds of years.According to the data of the international sweetener industry, stevia has been widely used in the production of food, beverage and flavoring in Asia, North America, South America and European Union countries.China is the world's leading stevia grower, stevia producer and exporter.