甜叶菊(Stevia rebaudiana Bertoni)为菊科斯台维亚属多年生半木质草本植物,主要特征叶对生,叶柄短,呈现明显的三出脉,叶形呈倒卵形至披针形,叶片中上部有粗齿。茎枝园形,幼嫩时绿色,上有短乳白色茸毛。甜叶菊的叶内主要成分——糖甙是四环双萜类配糖体,具高糖低热特性,甜度为砂糖300倍, Stevia rebaudiana Bertoni is a perennial semi-wood herbaceous plant of the genus Asteraceae. The main features are leaf-opposite, short petiole, obvious three veins, leaf shape obovate to lanceolate, and the upper part of the leaf is coarse tooth. Stems branch-shaped, green when young, short short white hair. Stevia main component of the leaves - glycosides are tetracyclic diterpene glycosides, with high-sugar low-heat characteristics, the sweetness of sugar 300 times,