1. Formulate the quality standards for fly ash burn-free permeable bricks in Shanxi Province to meet the market standard needs for the promotion and application of new technology products, and promote the efficient utilization of fly ash resources and the construction of sponge cities in Shanxi Province. 2. Add the anti-clogging performance indicators and test methods of permeable bricks to solve the common bottleneck problem of easy clogging and loss of water permeability function in the application of existing permeable bricks. 3. Improve the freeze-thaw resistance and water permeability indicators of the existing permeable bricks, and solve the problem that the existing permeable bricks cannot meet the frost resistance in northern areas and the water permeability in extreme weather is not timely. 4. Formulate quantity and quality index requirements for adding fly ash to permeable bricks to solve the problem of large proportions of fly ash being incorporated into permeable bricks.