To provide a food and drink containing a small amount of wheat bran, wherein food and drink show an intestinal flora improving effect by further containing a specific amount of protein.SOLUTION: An intestinal flora-improving food and drink satisfies the following (A)-(C): (A) the content of wheat bran being 6-15 g, (B) the content of protein derived from other components than wheat bran being 9-40 g, (C) the total calorie being 200-500 kcal.SELECTED DRAWING: None【課題】少量の小麦ふすまを含有する飲食品であって、さらに特定量の蛋白質を含有することにより、腸内菌叢改善効果を示す飲食品を提供する。【解決手段】下記（Ａ）～（Ｃ）を満たす腸内菌叢改善用飲食品：（Ａ）小麦ふすまの含有量が６～１５ｇ、（Ｂ）小麦ふすま以外に由来する蛋白質の含有量が９～４０ｇ、（Ｃ）総カロリーが２００～５００ｋｃａｌ。【選択図】なし
