Occur in specific low-sugar content of the acidic milk beverage, it is possible to effectively suppress the water separation after freezing and thawing, to provide a superior acidic milk beverages and a method of manufacturing the same in appearance at the time of eating and drinking. Acidic milk beverages of the present invention, milk, contains soy polysaccharide and water, non-fat milk solid content of 0.1 to 1.0 wt% and sugar content is from 0.5 to 1.7, and the pH 3.6~4.2, beverage least one Part After freezing, characterized in that the food by melting some or all of the freeze portion, in particular, it is useful as a frozen beverage products are packed in a container having high transparency.特定低糖度の酸性乳性飲料に生じる、凍結・融解後の離水を有効に抑制でき、飲食時の外観に優れた酸性乳性飲料及びその製造方法を提供する。本発明の酸性乳性飲料は、乳、大豆多糖類及び水を含み、無脂乳固形分量が0.1~1.0質量%、糖度が0.5~1.7、並びにpHが3.6~4.2であり、飲料の少なくとも一部を凍結した後に、凍結部分の一部又は全部を融解して飲食することを特徴とし、特に、透明度の高い容器に充填した凍結飲料製品として有用である。