The invention discloses a phosphate wear-resistant paint which comprises the following components in parts by mass: 12-16 parts of 3-5mm high bauxite, 18-25 parts of 1-3mm high bauxite, 10-15 parts of 0-1mm high bauxite, 6-12 parts of 0-1mm silicon carbide, 16-28 parts of high bauxite powder, 8-12 parts of aluminum hydroxide powder, 5-10 parts of Suzhou sludge, 8-15 parts of calcined alumina powder, 2-5 parts of silicon micropowder, 1-3 parts of oxalic acid and 1-2 parts of high-alumina cement. The spraying method comprises the following steps: uniformly mixing the raw materials, adding the mixture into a spraying machine, adding a phosphoric acid solution, uniformly mixing, adding the phosphoric acid solution at the spray gun outflow, and carrying out spraying construction. The phosphate wear-resistant paint product has the advantages of favorable binding strength, high adhesive rate, high setting rate, high medium/high-temperature strength, favorable wear resistance, favorable thermal shock stability, favorable mechanical wear resistance and favorable erosion resistance, is convenient for construction, and can be widely used in discharge hoods, grate coolers, kiln tail smoke-box moon gates, cyclone burners, tertiary air pipes and other irregular positions.