The invention provides a plant cosmetic with a stratum corneum repairing function and a method for preparing the plant cosmetic. The plant cosmetic and the method have the advantages that ceramide, fatty acid and cholesterol in the plant cosmetic are bound with one another according to certain portions, long chains are synthesized, thin layered structures are formed by means of folding, cutin canbe formed, accordingly, metabolism and regeneration of stratum corneum can be promoted, and protection functions of the stratum corneum can be improved; herba portulacae extract and herba centellae extract are matched with each other, and accordingly effects of resisting allergy and oxidation, delaying senility, promoting formation of collagen in curium layers and enhancing the quality of skin canbe realized; paeonia suffruticosa root extract and phytosterol are matched with each other, accordingly, antibacterial and anti-inflammation effects can be realized, and the permeability of the skincan be improved; various components in the plant cosmetic with the stratum corneum repairing function are matched with one another, accordingly, the metabolism of the stratum corneum can be promoted,and natural protective barriers can be provided to the skin; the formation of the collagen in the curium layers can be promoted, the skin can be improved from deep layers, and the senility of the skincan be delayed; the permeability of the skin can be improved, and effects of enhancing the absorptive capacity of the skin can be realized.