The water-based epoxy anticorrosive primer is a two-component self-drying paint that uses epoxy anticorrosive resin, pigment, filler, additive, water and imported curing agent as film-forming substances. Good hardness, good adhesion, good flexibility, excellent water resistance, solvent wiping resistance, low VOC, water as diluent, and low air pollution. The construction is convenient, it can be used directly with water, roller coating, brushing, spraying, easy to operate, time-saving, labor-saving, high efficiency, using environmentally friendly materials, no irritating odor, harmless to the human body, and no pollution to the environment. Water-based epoxy anticorrosive paint should be suitable for heavy anti-corrosion fields (such as all kinds of machinery and equipment, containers, ships, offshore platforms, wharves and other marine facilities, petrochemical plant pipelines and storage tanks, as well as metallurgy, electric power, food, textile and other industries in the steel components of rust and anti-corrosion).