Abstract: Using Hovenia dulcis concentrated juice as raw material through orthogonal test and based on single factor test, taking fuzzy mathematics comprehensive evaluation as index to optimize the formula. The results showed that,100 mL Hovenia dulcis beverage needed 20 mL Hovenia dulcis concentrated juice, the ratio of sucrose to acesulfame was 5.000 g∶0.020 g, the dosage of citric acid was 0.20 g, the ratio of lemon yellow to carmine was 0.100 mL∶0.050 mL, the ratio of xanthan gum to guar gum was 0.02g∶0.02g. The formula makes Hovenia dulcis beverage in harmony with sweet and sour, having delicate fragrance of Hovenia dulcis. It can be used in developing of Hovenia dulcis beverage.

Key words: fuzzy mathematics, comprehensive evaluation, Hovenia dulcis beverage, formula, optimize