The invention discloses a shell and waste residue containing element anion-releasing functional environment-friendly nanocoating, and belongs to the technical field of production of modern environment-friendly nanocoating. The shell and waste residue containing element anion-releasing functional environment-friendly nanocoating consists of river shell powder, waste alkali residue and bryozoatum containing antibacterial, poison-filtering and element anion-releasing environment-friendly coating, prepared shell powder, chitin, rhizoma atractylodis and chrysanthemum containing health-care nerve-soothing and refreshing environment-friendly coating, raw shell, tourmaline and seaweed charcoal containing formaldehyde-removing, sterilizing, antivirus and air-purifying environment-friendly coating, shrimp crab insect shell powder and sepiolite asbestos containing high-brightness, heat-insulating, electromagnetic wave-resisting and heat-preserving environment-friendly coating, raw oyster shell powder and copper, iron and molybdenum waste residue containing element anion-releasing sterilizing and mite-killing environment-friendly coating, and clam snail shell powder, chitosan, selenium-enriched and germanium-enriched ganoderma and diatomite containing free formaldehyde and benzene-absorbing and air-purifying environment-friendly coating, wherein shell, chitin and chitosan are only natural materials with positive charges, and can effectively absorb bacteria, viruses, toxic and harmful gas substances, heavy metals and hazes with negative charges in air, so that the environment-friendly coating can release element anions, promote human health and prolong the lifespan.