The invention discloses a skincare composition with an acne removal and anti-aging efficacy and a preparation method of a facial mask. The skincare composition comprises the raw materials: tremella extract, flaxseed extract, beta-glucan, castor oil and sodium polyacrylate and the like. The skincare composition with the acne removal and anti-aging efficacy can be a facial mask. The preparation method comprises the following steps: adding a film forming agent into deionized water, heating, preserving the heat, stirring until the film forming agent is completely dissolved to obtain a basic solution, then adding sodium polyacrylate, hydroxyethyl cellulose, talcum powder, polysorbate-80, sodium hyaluronate, glycerinum and aluminum trichloride into the basic solution, preserving the heat, stirring, cooling the solution, then adding the tremella extract, the flaxseed extract, the beta-glucan, the castor oil, essence and preservative, stiring, adjusting the pH, finally transferring into an emulsification machine, stirring, emulsifying, filtering by virtue of a screen, and filling, thus obtaining a finished product facial mask. The skincare composition with the acne removal and anti-aging efficacy has excellent acne removal effect, can effectively prevent the senescence of the skin, and is suitable for people with acnes and senescence to use.