The invention discloses a high-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating. The coating comprises the raw materials of, by weight: 55-60% of the bauxite clinker, 5-10% of magnesium aluminate spinel, 5-10% of calcined anthracite, 2-5% of flake graphite, 3-6% of silicon carbide, 4-6 % of alpha-Al2O3 powder, 4-6% silica micro-powder, 5-7% of calcium aluminate cement, 0.5-1.5% of metal silicon powder, 2.5-3.5% of water-soluble epoxy resin and water-soluble curing agent, 0.05-0.10% of explosion-proof fiber, 0.1-0.15% of sodium hexametaphosphate, 0.05-0.10% of an organic reducing agent, and 0. 04-0.07% of an organic silane coupling agent. With the slag-adhesion-preventing coating, the comprehensive targets are achieved, that service lives of the furnace beam and the column insulation lining are prolonged, furnace energy consumption and insulation lining surface slag adhesion amount are reduced, furnace maintenance cost is reduced, and high-temperature-oriented silicon steel production efficiency is improved.