Compound albumen powder capable of improving immunity and preparation method thereof

The invention discloses compound albumen powder capable of improving immunity and a preparation method thereof. According to the preparation method, soybean protein isolate, whey protein concentrate and phospholipid are used as main raw materials; stevia rebaudiana is processed at low temperature to prepare stevia rebaudiana extract so as to furthest maintain the effective ingredient and bioactive ingredient of stevia rebaudiana, and the stevia rebaudiana extract has the effects of high extraction rate, pure flavor, natural color and no licorice flavor, and can be scientifically compounded with main materials; antifreeze polypeptide, dietary fiber powder, bee pupa zymolyte and wheat malt flour are added to prepare the compound albumen powder which has proper taste, good solubility, comprehensive nutrition, strong bioactivity and wide applicable group and is capable of improving immunity. The preparation method adopts a non-thermal processing technology, has high work efficiency, little energy consumption, env