Natural royal jelly, a kind of natural nutrient tonic, is both lifetime food of queen bee and daily food of all kinds of little larvae of bee, so it is also called bee royal jelly or royal jelly. It is a mixture secreted from nutrition gland at head region of the young worker bee, with white or faint yellow in color and slightly fragrant and sweet taste, and is a ropy pasty liquid substance with comparatively strong acerb and biting taste.