Permeable bricks have the characteristics of permeability, moisture retention, anti slip, high strength, cold resistance, weathering resistance, noise reduction, and sound absorption. However, in practical applications, permeable bricks were prone to the phenomenon of pan alkali. The main reason for this is that soluble salts migrate to their surface through porous media within the structure, undergo chemical reactions, accumulate and crystallize, and the migration process is closely related to environmental temperature and humidity. The main component of this pan alkali is calcium carbonate (CaCO3). Research has shown that in the production process, physical methods, chemical methods, microbiological methods, and maintenance methods are generally used to effectively prevent the phenomenon of alkali formation in permeable bricks.