< Topic >Production method of the fermented milk beverage or the lactobacillus beverage which is efficient low at cost without requiring the new enormous plant investment like addition and the like of the storing liquid tank of bulk, can correspond to the demand for multi kind small-lot productions is offered.SolutionsInto the liquefied fermented milk adding and after mixing the stabilizer, it adds and mixes the non common secondary raw materials liquid which corresponds to the type of end product barrel fermented milk beverage or lactobacillus beverage vis-a-vis the mixed liquid of aforementioned liquefied fermented milk and the stabilizer.< Selective figure >Figure 1【課題】大容量の貯液タンクの増設等のような新たな巨額の設備投資を要することなく、低コストで効率よく、多品種少量生産の要求に対応できる発酵乳飲料又は乳酸菌飲料の製造方法を提供する。【解決手段】液状の発酵乳に安定剤を添加、混合した後に、前記液状の発酵乳と安定剤との混合液に対して、最終製品たる発酵乳飲料又は乳酸菌飲料の種類に対応した非共通副原料液を添加、混合する。【選択図】図1