The invention discloses a tea facial mask and a preparation method thereof. The formula of the tea facial mask comprises the following components in percentage by weight: 20-60 percent of bacterial-containing tea juice, 2-20 percent of fructus phyllanthi juice, 20-50 percent of water, 1-6 percent of egg white, 1-3 percent of xanthan gum and 5-10 percent of flexibilizer. The preparation method comprises the steps of mixing the raw materials, heating, evenly stirring, cooling, sealing and packagingto obtain the finished facial mask product. The facial mask produced by the formula and the process has soft texture and favorable attachment to the skin and can absorb and release more nutrient components; and the moisture preserving performance is favorable, so that the skin is smoother and has high elasticity. In addition, by using the toxin expelling function of dark tea and Puerh tea and combining the oxidation and radiation resistance of tea polyphenols, theanine and tea polysaccharide inherent in the tea and the functions of free radical removal and oxidation resistance of vitamin C and SOD like substances rich in fructus phyllanthi, the nutrient facial mask with multiposition integrated functions of expelling toxin, removing free radicals in human body, resisting the oxidation and radiation and the like is prepared.