The invention discloses a whitening sunscreen cosmetic and a preparation method and application thereof. The whitening sunscreen cosmetic consists of the following components in percentage by weight: 5 to 8 percent of emulsifier, 15 to 25 percent of fat, 0.5 to 1.5 percent of
antioxidant, 30 to 50 percent of deionized water, 3 to 6 percent of
wetting agent, 0.3 to 0.5 percent of emulsifier, 0.3 to 0.5 percent of stabilizing agent, 0.1 to 0.3 percent of penetrating agent, 10 to 15 percent of sun-screening agent, 0.5 to 4.0 percent of mixed
tartaric acid solution, 0.3 to 0.8 percent of
retinol, 0.5 to 1.0 percent of
lactobacillus / soybean fermented product, 0.1 to 1.5 percent of bacillus fermented product, 0.1 to 0.5 percent of
superoxide mutase, 1.0 to 4.0 percent of asafoetida root extract and 0.3 to 0.8 percent of
preservative. The whitening sunscreen cosmetic can be used for daily
skin beauty care, provides long-term and safe
sunscreen effect for
skin, has the effects of improving
skin gloss, whitening the skin, eliminating facial acnes and diminishing wrinkles, and solves problems of yellow face, no gloss and the like.