The invention relates to a preparation method of a health-care health-preserving
black tea ferment beverage. The preparation method comprises the following steps of taking dark tea and
sugar stevia leaves, adding water for soaking, performing decoction, performing low-temperature vacuum decompressed concentration on the decoction liquid, performing sterilization, and performing filtering, whereinfiltrate is a
nutrient solution; adding brown
sugar to the
nutrient solution, and performing uniform mixing to obtain a culture solution; and placing the culture solution in a fermenter, performing cooling, performing inoculating with
rhizopus oryzae and
red yeast rice strains, and then performing sealed
fermentation for 3-6 months, wherein the
fermentation temperature is 35-37 DEG C, so that thebeverage is obtained. The dark tea and the
sugar stevia leaves are used as a culture medium of the
nutrient solution, and composite
fermentation of the
rhizopus oryzae and the
red yeast rice strains is a transformation tool. A conventional deep-layer
liquid state fermentation technology is adopted, so that the health-care health-preserving
efficacy of original dark tea can be improved, and activesubstances generated by zymocyte fermentation can be increased. The health-care health-preserving
black tea ferment beverage is safe and free from
toxin. The obtained beverage is a purely natural fermentation
metabolism product, is free from any
preservative and high in nutrient value, has various health-care health-preserving
efficacy, and is suitable for various
crowds to drink.