The invention discloses a photochromic ceramic tile and a preparation method thereof. The preparation method comprises the steps of: A, preparation of ground glaze: by mass percentage, mixing 30-35% of frit, 3-7% of a functional agent, 20-28% of lithium porcelain stone, 5-10% of zirconium silicate, 20-25% of kaolin and 10-12% of quartz evenly, conducting wet ball-milling, and performing sieving to obtain slurry ground glaze; B, preparation of surface glaze: by mass percentage, mixing 70-80% of frit, 1-4% of conductive powder, 10-20% of kaolin, 5-8% of alumina, 1-2% of zinc oxide and 1-5% of zirconium silicate evenly, performing wet ball-milling, and conducting sieving so as to obtain slurry surface glaze; and C, applying the ground glaze and surface glaze prepared by step A and step B respectively to a tile blank in order, and performing firing so as to obtain the ceramic tile. Compared with the existing ceramic tiles, the ceramic tile prepared by the method provided by the invention has the characteristics of scientific compounding, reasonable preparation and stable performance. Also through reasonable collocation with conductive powder, photochromic compounds and antibacterial powder, the ceramic tile has excellent antibacterial, antistatic and photochromic properties, thus further broadening the application scope of ceramic tiles.