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 requiring protection. This coating meets the requirements for sound absorption, thermal insulation, and fire protection. The material is lightweight, odorless, non-toxic, has excellent sound absorption and weather resistance, provides high thermal insulation efficiency, and is reliable in fire resistance, offering over 5 hours of fire protection. It is suitable for fire protection in buildings and tunnels, especially for high-rise steel structures with stringent fire resistance requirements. It is also applicable for thermal insulation and sound absorption in buildings and energy-saving thermal insulation in mechanical equipment.