Abstract:Taking the fruits and vegetables like purple sweet potato， jujube， hawthorn as the main raw materi－ als， the formula， processing technology and key technology of the compounded beverage was studied in this pa－ per. On the basis of the study with different proportions， the best formula of the compound beverage was ob－ tained as follows： the ratio of purple sweet potato， jujube and hawthorn is 64.5 ∶ 21.0 ∶ 14.5 （percent by vol－ ume）. The optimized formula of the compound beverage was obtained by orthogonal method， which was 95 % of compound juice including purple sweet potato juice， jujube juice and hawthorn juice， 4 % of sugar and 0.06 % of citric acid. The compound beverage has a purple color with the proper acidity and sweet taste. The compound－ ed beverage releases the strong aroma of purple sweet potato and jujube smells， and is a natural drink with high nutritional value.