"GB/T 45774.1-2025 Quantitative Determination of Antibacterial Activity on the Surface of Ceramic Tiles, Test Methods, Part 1: Surfaces of Ceramic Tiles Containing Antibacterial Agents" is the first part of the series of standards for the detection of antibacterial performance of ceramic tiles, which stipulates the quantitative determination method of antibacterial activity on the surface of ceramic tiles containing antibacterial agents. The standard provides a unified technical basis for the production of building materials, Quality control and scientific research, and helps to accurately evaluate the antibacterial efficacy of such ceramic tiles. It is of great significance for standardizing product mass and guiding market application.