Disclosed a Dahlia pinnata composition, Dahlia pinnata composition powders, a Dahlia pinnata cosmetic composition and a method for producing the same. A method for producing a Dahlia pinnata composition includes preparing Dahlia pinnata petals； adding and stirring ethanol into the Dahlia pinnata petals to extract Dahlia pinnata extract； filtering the Dahlia pinnata extract； and diluting the filtered Dahlia pinnata extract in a solvent to obtain a Dahlia pinnata composition having an antioxidant efficacy. The Dahlia pinnata composition is produced by the method for producing a Dahlia pinnata composition, and thus has an antioxidant efficacy. In addition, the cosmetic composition includes the Dahlia pinnata extract and thus has an antioxidant efficacy.
