The invention relates to high-temperature bright-red printing glaze, its preparation method and a preparation method of a glazed tile. On the basis of not making big changes on a present glazed tile production technology, emphasis is put on adjustment and optimization of composition of printing basic glaze powder, composition of frit in the printing basic glaze powder, optimization and ratio of frits with different properties, composition of stamp-pad ink, processing technology of printing glaze, engraving mode of a rubber covered roller, mesh number of a screen printing plate and the like. Thus, the color of the surface of a high-temperature sintered glazed tile imprinted with the single printing glaze is bright, pure, glossy and shiny and is typical bright red. When the printing glaze is alternately printed with a printing glaze of other colors, the color on the surface is bright, pure, wide in color gamut and colorful, can be compared favorably with colors in the fields of fabrics, wallpaper, advertisement design, and has strong decorative effect and aesthetic feeling. Meanwhile, the technology has high universality and is easy to popularize in the industry.