To provide a fermented milk drink which has high stability even when stored for a long time, has good smoothness and smoothness, and has moderate richness.SOLUTION: This fermented milk drink is provided with a high stability even when stored for a long period of time, smooth and easy to spread, and having an appropriate richness sense by the following method for producing a fermented milk drink.A process for producing a fermented milk drink comprising the following steps (A) and (B):(A) mixing a material containing protein derived from milk or milk and pectin having an esterification degree of 15% or less(B) a step of fermenting by adding lactic acid bacteria to the heat-treated mixture obtained in the step (A)Selection drawing None【課題】長期間保存しても安定性が高く、なめらかでのどごしが良く、適度な濃厚感を有する発酵乳飲料の提供。【解決手段】次の発酵乳飲料の製造方法により、長期間保存しても安定性が高く、なめらかでのどごしが良く、適度な濃厚感を有する発酵乳飲料を提供する。次の(A)および(B)の工程を含む発酵乳飲料の製造方法。(A)乳または乳由来のタンパク質を含む材料および15%以下のエステル化度を有するペクチンを混合する工程(B)上記(A)の工程にて得られた混合物を熱処理したものに、乳酸菌を加えて発酵する工程【選択図】なし