The invention discloses a collagen antioxidant peptide-containing beautifying drink and a preparation method thereof. The collagen antioxidant peptide-containing beautifying drink comprises the following components: collagen antioxidant peptide, dried red dates, dried longan pulp, seedless dried grapes, green tea, vitamin C, vitamin E, a proper amount of honey, natural flavors, drinking water and the like. The preparation method comprises the following processing steps: decocting and filtering the dried red dates, red longan pulp, seedless dried grapes and green tea, to obtain decocted liquid, then blending together with collagen antioxidant peptide, vitamin C, vitamin E and water according to the ratio, adding a proper amount of honey and natural flavors, finally filling and sterilizing to obtain a finished collagen antioxidant peptide-containing beautifying drink. The preparation method is simple, the formula is scientific, the production period is short, and the preparation method is suitable for industrial production; no any synthesized food additive is added in the drink, and the drink is natural, healthy, rich in nutrients, and pleasant in flavor, and can meet the demands of people on safe and nutritional health-care drink, and high flavor mouthfeel.