Abstract:  Fermented soy milk containing live bifidobacterium adolescentis was prepared with the mixture of soy milk and carrot juice as well as honeydew. On the point of taste and aspect of live cell of the products, the fermentative conditions were studied and the optimum conditions were obtained as follows:fermentative temperature (37℃ )， time of fermention (10h)concentration of starter (5％ v/v)and concentration of honey dew (2％ ).The optimum propartion of the substrates was 50％ (v/v) of carrot juice and 50％ (v/v) soy milk.

Key words: Bifidobacterium adobescentis Soymilk Fermentation