To provide a technique for improving survival of Bifidobacterium bacteria in fermented milk containing the Bifidobacterium bacteria during its storage.SOLUTION: The present invention provides a method for producing a fermented milk in which a culture solution (A) is mixed with a culture solution (B), where, the culture solution (A) is obtained by inoculating a culture medium A mainly made of milk with Bifidobacterium bacteria for culturing and has a pH of 4.3-4.7, and the culture solution (B) is obtained by inoculating a culture medium B mainly made of milk with lactic acid bacteria for culturing and has a pH of 4.8-5.4.SELECTED DRAWING: None【課題】ビフィドバクテリウム属細菌を含有する発酵乳の保存時のビフィドバクテリウム属細菌の生残性を改善する技術を提供する。【解決手段】乳を主成分とする培地Ａにビフィドバクテリウム属細菌を接種し、培養して得られるｐＨ４．３～４．７の培養液（Ａ）と、 乳を主成分とする培地Ｂに乳酸菌を接種し、培養して得られるｐＨ４．８～５．４の培養液（Ｂ）とを、混合することを特徴とする発酵乳の製造方法。【選択図】なし
