The invention relates to a twenty-herb herbal skin-nourishing mask and a preparation method thereof. The mask is prepared from the following raw materials in parts by weight: water, propylene glycol,glycerin, betaine, a ginseng extract, a ganoderma atrum extract, a saussurea involucrata extract, a rhodiola crenulata extract, a leonurus extract, a gentiana extract, anangelica sinensis extract, a bletilla striata extract, a glycyrrhiza glabra extract, a chrysanthellum indicum extract, a hamamelis virginiana extract, an astragalus mongolicus extract, a rhizoma atractylodis macrocephalae extract,a peony extract, a radix ampelopsis extract, a poria cocos extract, a stiff silkworm extract, a ligusticum wallichii extract, a rose flower extract, a centella asiatica leaf extract, arbutin, an acryloyl dimethyl taurine ammonium/VP copolymer, xanthan gum, dimethyl glycyrrhizinate, sodium hyaluronate, methylparaben, phenoxyethanol, ethylhexylglycerin, capryloyl hydroxamic acid, glycerol caprylateand essence. The mask is simple to prepare, has no side effect on skin, does not generate any anaphylactic reaction after long-term use, and can naturally protect skin and repair facial skin.