The invention provides a sol-bonded wet spray coating for a blast furnace lining and a preparation method of the sol-bonded wet spray coating. The spray coating comprises the following raw materials in parts by weight: less than or equal to 30 parts of silicon carbide, less than or equal to 80 parts of high alumina material, less than or equal to 60 parts of mullite, less than or equal to 60 parts of flint clay, 3-20 parts of alumina powder, 3-20 parts of silica fume, less than or equal to 5 parts of clay, 0.5-5 parts of resin powder, 0.02-1 part of organic fiber, less than or equal to 1 part of an interface agent, 0.01-0.2 part of a coagulation accelerator, 0.02-0.2 part of a dispersing agent and 8-12 parts of sol. The sol-bonded wet spray coating for the blast furnace lining and the preparation method thereof provided by the invention have the benefits that the use performance of the material is greatly improved, the service life of the material for construction is long, and the molten slag corrosion resistance and the erosion resistance are good, so that a contribution is made for high efficiency and long service life of a blast furnace.