The invention discloses a decorative pattern photochromic ceramic tile and a preparation method thereof. The method comprises the following steps: A, press forming of a blank and drying in a roller kiln to obtain a ceramic tile blank; B, applying a bottom glaze on that ceramic tile blank body to obtain a bottom glaze layer; C, applying pattern decorative glaze ink on that bottom glaze layer to obtain a pattern decorative layer; D, applying a discolored decorative glaze on all or part of that decorative pattern of the pattern decorative layer to obtain a discolored decorative glaze layer; E, applying a transparent glaze on that discolored decorative glaze lay to obtain a transparent protective glaze layer; F, firing and molding in a kiln to obtain the photochromic ceramic tile. By applyingthe bottom glaze, the color rendering effect of the decorative ink is improved. By applying the discolored decorative glaze on the whole or part of the decorative pattern on the decorative layer of the pattern, the color of the decorative pattern photochromic ceramic tile changes with the light after firing, and the decorative effect and the aesthetic effect are improved. By applying transparent glaze, the coloring effect is improved and the surface of ceramic tile is protected.