As a new natural sweetening agent, stevioside is widely applied in food, drinks, medicine and daily chemicals. Broadly speaking, stevioside can be used to take the place of cane sugar or saccharine in all products. At present, stevioside is mainly used in beverage, food and also used in tobacco, chewing gum, toothpaste, mouthwash and pharmaceutical. It has differrent using dosage in different products. In order to make sure the good quality and get a good taste and flavor with being tested repeated to get a better proportion.