1. Water permeability: Due to its porous structure, hollow block has good water permeability, which can effectively absorb and discharge rainwater, reduce the phenomenon of surface runoff, and reduce the pressure of urban drainage. 
2. Natural Penetration & Purification: The core concept of sponge city construction is to realize natural accumulation, natural infiltration, and natural purification. Hollow block plays an important role in this, and its permeable properties help in the infiltration and purification of rainwater. 
3. Reducing urban waterlogging: By using hollow block, it can effectively reduce the problem of urban waterlogging, improve the situation of urban water accumulation, and improve the city's flood control and drainage capacity. 
4. Eco-friendly building materials: As an environmentally friendly building material, hollow block mainly uses clay and industrial waste residue as raw materials in its production process, which reduces the consumption of natural resources compared with traditional blocks. 
5. Energy Saving: The thermal insulation performance of hollow block is remarkable, which can effectively reduce the energy consumption of the building and achieve energy saving and consumption reduction.
6. Resource Conservation & Recycling: In the production process of hollow block, industrial waste residue and other materials can be used, and waste hollow blocks can also be reused after simple treatment, promoting the development of circular economy in the construction industry.
7. Improving the urban ecological environment: The construction of sponge city requires a large number of permeable block products as pavement materials, and the comprehensive utilization of solid wastes such as block slag tailings for hollow block will help improve the urban ecological environment. 
8. Noise Pollution Reduction: The porous structure of hollow block has a good sound absorption effect, which can effectively reduce the noise pollution inside and outside the building, and improve the quality of the living and working environment.