The invention discloses a novel heat-insulating and self-cleaning environmentally friendly coating. The coating comprises, by mass, 30-65 parts of an acrylate emulsion, 25-55 parts of a silicone-acrylic emulsion, 5-15 parts of fluoroalkylsiloxane, 5-15 parts of a glass fiber filler, 5-10 parts of mica powder, 3-8 parts of talcum powder, 3-10 parts of ceramic powder, 5-15 parts of nanometer titanium dioxide, 5-10 parts of nano-alumina, 5-10 parts of nano-graphite powder, 2-5 parts of a silane coupling agent, 1-3 parts of a viscosity regulator, 1-3 parts of a leveling agent, 1-3 parts of a dispersant and 0.5-1.5 parts of a defoaming agent. The novel heat-insulating and self-cleaning environmentally friendly coating is used as an environmentally friendly exterior wall coating, and has the advantages of good heat insulating performance, good anti-fouling performance, good self-cleaning performance, long storage period, good stability and good use effect.