The invention discloses an aqueous chrome-free zinc-aluminum coating material, a preparation method and applications thereof, and belongs to the field of coating materials, wherein the coating material comprises, by weight, 30-40 parts of a film-forming material, 30-40 parts of metal powder, 5-10 parts of a self-lubricating filler, 3-6 parts of a wetting agent, 0.2-0.8 part of a dispersant, 1-3 parts of a corrosion inhibitor, 0.2-0.6 part of a thickener, 0.2-0.6 part of a defoaming agent, and 10-20 parts of water, wherein the film-forming material is the mixture of a self-cross-linking acrylate emulsion and a nanometer silica sol. According to the present invention, the coating material can provide the anticorrosion effect for fasteners, can be cured at the normal temperature, and does notaffect the mechanical property of materials, wherein the coating formed after the curing has the self-lubricating function, cannot be worn and damaged during the assembling, has excellent corrosion resistance, and can meet the environmental protection requirement.