The invention discloses juicy peach and peanut composite flavored yoghourt rich in multiple functional factors and a preparation method thereof. The preparation method is characterized by comprising the following steps: sprouting peanuts to enrich functional factors, preparing peanut milk, preparing a kiwi fruit leaf and pitaya peel composite extract, preparing juicy peach juice, performing blending, and adding lactic acid bacteria for fermentation so as to obtain the juicy peach and peanut composite flavored yoghourt containing the functional factors such as resveratrol, gamma-aminobutyric acid, organic selenium, phenolic substances, betaine pigments, chlorophyll, vitamin C and polysaccharides. The yoghourt has the advantages of being unique in flavor and rich in nutrients, and having antioxidant and immune regulation functions.