The invention discloses a preparation method of a polypeptide silk facial mask, which comprises the steps of fully mixing polypeptide powder and silk protein nutrient solution and cooling. Polypeptide powder is mainly composed of aloe vera, carnosine, oligopeptide, soluble collagen, 2‑o‑ethyl ascorbic acid, betaine, trehalose, niacinamide, allantoin; the protein nutrient solution of silk is mainly composed of water, glycerin, Propylene glycol, butylene glycol, malto-oligosaccharide glucoside, hydrogenated starch hydrolyzate, glycerol polymethacrylate, PVM / MA copolymer, carbomer, sodium hyaluronate triethanolamine, baobab pulp extract, tranexamic acid , Centella asiatica extract, dipotassium glycyrrhizate and other skin conditioners or moisturizers. Through the combination of polypeptide powder and silk protein liquid, it can effectively give fresh nutrition to the skin, promote the skin repair process, strengthen the nutrient absorption capacity, deeply nourish, smooth and rejuvenate the skin, and make the skin elastic.