The invention provides an apple polyphenol-based multi-effect beauty mask and a preparation method thereof. The preparation method concretely comprises the following steps: (1) cleaning young fruits of apples, cutting into pieces, grinding into apple puree, adding a solvent into the apple puree, carrying out ultrasonic treatment under a sealing condition, and carrying out suction filtration to obtain filtrate; after that, carrying out rotary evaporation on the filtrate, and separating and purifying to obtain apple polyphenol extract, namely, apple extract; (2) drying tremella fuciformis, asiatic pennywort herb, rhizoma polygoni cuspidati, radix scutellariae, tea, glycyrrhiza glabra, mother chrysanthemum, rosemary leaves and purslane herb in the sun, sterilizing, mixing according to a proportion, putting the mixture into a grinding device, grinding and filtering, adding a solvent into the product, heating, carrying out ultrasonic processing, and filtering to obtain plant extract; (3) respectively adding a thickening agent, a humectant and a conditioner into water, heating up and stirring until the mixture is completely dissolved; after that, adding the apple extract and he plant extract, homogeneously mixing, and cooling to obtain essence; (4) soaking a piece of mask cloth into the essence, pressing the mask cloth after the essence is completely absorbed by the mask cloth, slicing, and carrying out aseptic packaging to obtain the apple polyphenol-based multi-effect beauty mask.