NOVELTY - A gray solar heat-reflective cooling coating comprises 80-99 pts. wt. white pigment and 1-20 pts. wt. complementary color pigment paste in which white pigment comprises 20-45 pts. wt. acrylic emulsion, 10-20 pts. wt. titanium pigment, 1-3 pts. wt. talcum powder, 2-4 pts. wt. hollow glass microsphere, 3-7 pts. wt. heavy calcium carbonate, 2-5 pts. wt. far-infrared ceramic powder, 0.1-1 pt. wt. dispersant, 0.05-1 pt. wt. wetting agent, 0.88-1 pt. wt. de-foaming agent, 0.05-1 pt. wt. flatting agent, 0.05-1 pt. wt. film-forming auxiliary agent, and 0.05-1 pt. wt. water.    USE - A gray solar heat-reflective cooling coating for building roof and outside wall decoration.    ADVANTAGE - Cooling coating has good cooling performance, good weather resistance, improved near-infrared region reflectivity, heat insulating property, optical performance, and convenient construction, and is environment-friendly and energy-saving.    DETAILED DESCRIPTION - A gray solar heat-reflective cooling coating comprises 80-99 pts. wt. white pigment and 1-20 pts. wt. complementary color pigment paste in which white pigment comprises 20-45 pts. wt. acrylic emulsion, 10-20 pts. wt. titanium pigment, 1-3 pts. wt. talcum powder, 2-4 pts. wt. hollow glass microsphere, 3-7 pts. wt. heavy calcium carbonate, 2-5 pts. wt. far-infrared ceramic powder, 0.1-1 pt. wt. dispersant, 0.05-1 pt. wt. wetting agent, 0.88-1 pt. wt. de-foaming agent, 0.05-1 pt. wt. flatting agent, 0.05-1 pt. wt. film-forming auxiliary agent, and 0.05-1 pt. wt. water, and complementary color pigment paste comprises 60-78 pts. wt. water, 1-20 pts. wt. complementary color pigment, 0.1-1 pt. wt. dispersant, and 0. 1-1 pt. wt. wetting agents. An INDEPENDENT CLAIM is included for preparation of gray solar heat-reflective cooling coating which involves adding water to wetting agent and dispersant to obtain mixed liquid, adding complementary color pigment, stirring to obtain 1-20 mass% complementary color pigment paste in which amount of water is 60-78 mass%, and amount of wetting agent and dispersant is 1 mass% all with respect to complementary color pigment paste, adding water to dispersant, wetting agent, and 1/3 de-foaming agent, stirring, adding acrylic emulsion, stirring, adding titanium pigment, talcum powder, hollow glass microsphere, far-infrared ceramic powder, and 1/3 de-foaming agent, high-speed stirring, adding film-forming auxiliary agent, flatting agent, and 1/3 de-foaming agent, high-speed stirring, adding remaining water to adjust viscosity to obtain white pigment, adding complementary color pigment paste, high-speed stirring, and adding water to adjust viscosity.    DESCRIPTION OF DRAWING(S) - The drawing shows a graph of gray solar heat-reflective cooling coating reflectivity using Palio black root black pigment and white pigment.