Even if this Hair bright purpose in the raw Shen Lake of Qing Xing Time , Yi Long phase Bu Yi Productivitys of the what Ti Gong mono- Seed what phase Right great Liang Di Tone with Dan Bai Quality and Steady is Dinged the liquid Like Drink of the acidity that Di Victoria hold dispersion in Dan Bai Quality Yu Ye Body and is expected.The characteristic of this Hair bright Suan Dan Bai Quality Drink material is in what:Raw material containing the white Quality of egg to few Seed Department Full specific powder Like albumen materials that must want Strip parts enough the white Quality Drink of And and The acid eggs expect the white 1 weight % of Quality contents As or more of Department eggs, it and include that soybean polyoses Class and/or pea polysaccharide Class makees the dispersion Steady of As Dan Bai Quality and determines Elixirs, As liquid Like and pH As 3 ~ 5.本發明之目的在於提供一種即便於相對大量地調配蛋白質之情形時,亦長期不易產生沈澱而穩定地維持蛋白質於液體中之分散的酸性之液狀飲料。本發明之酸性蛋白質飲料之特徵在於:含有蛋白質之原料之至少一種係滿足特定之必要條件之粉末狀蛋白素材,並且該酸性蛋白質飲料係蛋白質含量為1重量%以上,且包含大豆多糖類或/及豌豆多糖類作為蛋白質之分散穩定劑,為液狀且pH為3~5。