A
Bifidobacterium longum subsp. infantis YLGB-1496 bacterial preparation, a preparation method, and a use thereof. The bacterial preparation is prepared by
fermentation of a viable bacterium of
Bifidobacterium longum subsp. infantis, and is prepared from the viable bacterium of
Bifidobacterium longum subsp. infantis and its
metabolite of specific composition; and the bacterial preparation is used for intestinal health regulation, has efficacies such as an anti-inflammatory
efficacy, enhanced
gut immunity, regulation of gut microbiota, and alleviation of intestinal
bloating, can be used for the preparation of fermented foods, drugs, or
animal feed, and has wide application prospects.