The invention relates to a glazed brick with fluorescent luster and a preparation method thereof. The glazed brick comprises a blank layer, a makeup soil layer, a decorative layer, a flash layer and aglazed layer. The flash layer contains mica flakes. The flash layer comprises transparent glaze powder, water and the mica flakes, and comprises the following components in parts by weight: 100 partsof the transparent glaze powder, 45-50 parts of the water and 0.3-1 part of the mica flakes. The preparation method comprises the following steps of: (1) pressing and forming a blank body and dryingthe blank body; (2) applying the makeup soil layer; (3) applying the decorative layer, to be more specific, decorating the surface of the brick blank by adopting an ink jet printing process to form the decorative layer; (4) applying the flash layer, to be more specific, using a bell jar glaze sprayer to spray the flash layer; (5) applying the glazed layer, to be more specific, applying a knife type glaze spraying device to spray the glazed layer; (6) firing, to be more specific, firing at the firing temperature of 1165-1210 DEG C, wherein the firing time is 55-80 minutes; and (7) polishing, tobe more specific, controlling the glossiness at 75-85 degrees after polishing.