Abstract: The steviosides extraction adopted ion-exchange resin, to promote the purity of the stevioside by means of resinabsorption, elution, desalting and decoloring. The steviosides recrystallization adopted the organic solvent method .An idealcrystallization of stevioside and the optimal best conditions and practical technological process were obtained.

Key words: Stevioside , Ion-exchange resin , Recrystallization