To provide a method of activating beneficial intestinal bacteria for improving intestinal flora, and a method of activating good intestinal bacteria.SOLUTION: A plurality of oligosaccharides suitable for activation of a target intestinal beneficial bacterium are selected, and the plurality of oligosaccharides are combined in a blending proportion suitable for activation of the intestinal beneficial bacteria to enter the intestinal flora A method for activating a beneficial intestinal bacterium characterized by:Selection drawing None【課題】腸内細菌叢を改善するための腸内善玉菌の活性化方法及び腸内善玉菌活性化組成物の提供。【解決手段】対象となる腸内善玉菌の活性化に適する複数のオリゴ糖を選定し、該複数のオリゴ糖を前記腸内善玉菌の活性化に適する配合割合で組み合わせて腸内細菌叢に与えることを特徴とする腸内善玉菌の活性化方法。【選択図】なし