The invention discloses facial mask essence for replenishing water and moisturizing and a preparation method of the facial mask essence. The facial mask essence comprises the following raw materials in percentage of 0.1-1% of methyl ester, 8-12% of propylene glycol, 5-10% of sodium hyaluronate, 5-10% of carbomer, 50-70% of water, 5-10% of butanediol, 4-6% of fullerene, 3-5% of trehalose, 1-4% of nicotinamide, 0.05-1% of octanohydroxamic acid, 0.05-0.2% of triethanolamine, 0.05-1% of glycerol caprylate, 0.05-1% of a centella asiatica extract, 0.05-1% of a herba portulacae extract, 0.05-1% of anoat kernel extract, 0.05-1% of a wheat bran extract, 0.05-1% of a glycyrrhiza glabra root extract, 0.05-1% of a chrysanthellum indicum extract, 0.05-1% of a licorice root extract, 0.05-1% of a polygoni cuspidati extract, and 0.05-1% of a radix scutellariae root. The facial mask essence has the beneficial effects that nutrients components in the essence permeate skin and muscle to be absorbed by the skin and the muscle, and moistening skin and muscle can reappear. Through cooperation of components for moisturizing and replenishing water, moisture is replenished for the skin and the muscle, theskin and muscle can be relaxed, moistened, repaired, moisturized and cared, the phenomenon that the skin and the muscle lack of water and are dried can be improved, after being used for a long term,the facial mask essence can enable the skin and the muscle to be moistened and cleared, can realize effects of soothing and replenishing water, resisting wrinkles, tendering skin, controlling oil andremoving acnes, and the skin can be bright and moistening.