The invention discloses a facial mask capable of relieving and repairing weak skin and enhancing skin activity and a preparation method of the facial mask. The facial mask consists of the following components: 85-92% of water, 1-1.3% of propylene glycol, 0.5-1.6% of glycerol, 0.3-0.8% of trehalose, 0.2-0.7% of corn glutelin amino acids, 0.2-0.8% of hydroxyethyl cellulose, 0.1-0.6% of allantoin, 0.3-0.8% of panthenol, 0.4-0.9% of aloe vera gel, 0.2-0.8% of elastin, 0.2-0.8% of 3-O-ascorbic acid, 1-1.8% of sodium hyaluronate, 0.6-1.3% of a himanthalia elongata extract, 0.2-0.5% of phenoxyethanol, 0.1-0.5% of a cordate houttuynia extract, 0.2-0.8% of yeast beta-glucan, 0.2-0.7% of a betula bark extract and 0.1-0.3% of essence. The facial mask disclosed by the invention organically combines the aloe vera gel, elastin, himanthalia elongata extract, yeast beta-glucan and betula bark extract for the first time for relieving, repairing and caring weak skin and for enhancing skin activity, so as to solve skin problems of being sensitive, dry, dark yellow, saggy and the like, and the facial mask has achieved innovative technical effects. The preparation method of the facial mask capable of relieving and repairing weak skin and enhancing skin activity can be used for effectively preparing the facial mask disclosed by the invention, and the preparation method is simple in operation.