The invention discloses two-agent carbonic acid foamed mask and a preparation method and application method thereof and is intended to provide a facial mask easy to clean, effective to foam, free of discoloring and good in whitening and moisturizing effect. The two-agent carbonic acid foamed mask comprises an acid prefabricated article and an alkaline prefabricated article; the acid prefabricatedarticle includes a polyol, xanthan gum, 1,2-hexanediol, citric acid, sodium citrate, polyglyceryl-10 laurate, inositol choline glycerophosphate, bisabolol, ginger root extract, opuntia streptacantha stem extract, Olea europaea fruit oil, and suitable deionized water; the alkaline prefabricated article includes a polyol, a humectant, 1,2-hexanediol, Tamarindus indica seed gum, sodium bicarbonate, dipotassium glycyrrhizinate, Zanthoxylum piperitum fruit extract, Chinese pulsatilla root extract, Usnea barbata extract, oligopeptide-1, mannitol, rice fermentation product filtrate, and suitable deionized water. The invention belongs to the technical field of cosmetics.