Stevia is extracted from the herb stevia rebaudiana bertoni. It is a natural high sweetener with a low calorie, and 200-300 times sweeter than that of cane sugar, calories in it have only 1/300th of cane sugar. A lot of drug experiments proved that stevioside is not-toxic, not carcinogenic and high security. The original resident from South America, Paraguay, Brazil, etc. Have utilized it for several hundred years and have not found any toxic effects. Regular consumption can prevent hypertension, diabetes obesity, heart disease and disease of dental caries. It is a very good substitute to replace cane sugar. Stevioside can be used in the food, beverage, pharmaceutical, daily chemicals, wine, cosmetics and other industries, its costs will be reduced by over 60% of cane sugar. It is called the third of sugar source.