Provided is a method for producing fermented milk, which can produce high-concentration fermented milk excellent in flavor and texture at low cost. A fermented milk production method for obtaining fermented milk containing protein at a high concentration by fermenting raw milk containing desalted skim milk, milk protein concentrate, whey protein concentrate, and fresh cream. When the total mass of the desalted skim milk, the milk protein concentrate and the whey protein concentrate is 100%, the desalted skim milk is 70 to 80%, the milk protein concentrate is 15 to 25%, and the whey protein Blend the concentrate at a rate of 2-6%.風味および食感に優れた高濃度の発酵乳を安価に製造できる発酵乳の製造方法を提供する。脱塩脱脂乳と、乳タンパク質濃縮物と、ホエイタンパク質濃縮物と、生クリームとを含む原料乳を発酵させることにより、タンパク質を高濃度で含む発酵乳を得るための発酵乳の製造方法であって、脱塩脱脂乳と乳タンパク質濃縮物とホエイタンパク質濃縮物の質量の合計を１００％としたときに、脱塩脱脂乳を７０～８０％、乳タンパク質濃縮物を１５～２５％、ホエイタンパク質濃縮物を２～６％の割合で配合する。
