Inorganic fiber spray is a new type of environmentally friendly building coating, primarily composed of inorganic fibers and water-based adhesives. After mixing, it is sprayed through an air compressor and blended with atomized water to form a coating on the base material that requires protection. This coating meets the requirements for sound absorption, thermal insulation, and fire protection. The material is lightweight, odorless, non-toxic, has excellent weather resistance, high thermal insulation efficiency, and reliable fire resistance, providing over 5 hours of fire protection. It is suitable for fire protection in buildings and tunnels, particularly for high-rise steel structures with high fire resistance requirements. It is also applicable for thermal insulation and sound absorption in buildings and energy-saving insulation in mechanical equipment.