The invention relates to the field of coatings and particularly relates to an aqueous composite zinc-aluminum anticorrosion coating. The aqueous composite zinc-aluminum anticorrosion coating comprises, by weight, 40-65 parts of zinc-aluminum alloy powder, 2-5 parts of a passivating agent, 10-18 parts of a binder, 25-45 parts of a dispersing agent, 0.5-5 parts of a wetting agent, 5-15 parts of a filler, 0.5-2 parts of an additive and 100 parts by weight of a solvent. The filler comprises one or more of nano-silica, nano-titanium dioxide, nano-zinc oxide, modified graphene, nano-alumina, mica powder, talc powder, calcium carbonate, barium sulfate, kaolin, aluminum silicate and nano-cerium oxide. The solvent is a mixture of ethanol and water. The content of ethanol is 20wt% to 50wt%.