The present invention discloses a non-cracking environmentally-friendly flooring material characterized by comprising the following components in parts by weight: 50 parts of phosphorus gypsum powder, 20-30 parts of ironmaking blast furnace slag, 15-20 parts of perlite, 10-12 parts of ultra-fine talcum powder, 6-8 parts of mineral fiber, 5-7 parts of sand and gravel, 8-10 parts of gypsum, 2-3 parts of a foamer, 2-3 parts of a modified water reducer, 3-4 parts of ash calcium, 10-15 parts of silica sand, 4-6 parts of a binder, 0.8-1 part of a compatibility and 2-3 parts of a flame retardant; the non-cracking environmentally-friendly flooring material turns waste into treasures, by addition of the phosphorus gypsum powder, the perlite and other components with excellent fire-prevention and anti-corrosion effects, the mechanical properties and the chemical properties are better than that of ordinary building materials, the prepared non-cracking environmentally-friendly flooring material is small and even in hole and bubble diameter, has the functions of light weight, thermal insulation, fire protection, sound insulation and air humidity condition, has good anti-aging and anti-photodegradation properties, is less susceptible to temperature and pH and other external environment to degenerate, and greatly improves the fire performance of thermal insulation materials.