Water-based epoxy anti-corrosion primer

The invention discloses a water-based epoxy anti-corrosion primer which consists of a component A and a component B, wherein the component A is prepared from the following raw materials in percentage by weight: 10 to 20 percent of a modified amine hardener, 25 to 40 percent of deionized water, 5 to 30 percent of pigment, 15 to 35 percent of a filler, 5 to 15 percent of an antirust pigment, 0.1 to 0.4 percent of a defoaming agent and 0.3 to 0.8 percent of a leveling agent; the component B is prepared from the following raw materials in percentage by weight: 10 percent of an emulsifier, 50 percent of liquid epoxy resin, 39.8 percent of deionized water and 0.2 percent of a defoaming agent; the quality indexes are as follows: the fineness is less than or equal to 15 [mu]m, the epoxy value is 0.28 to 0.30, and the solid content is 55 +/- 2 percent. The invention further discloses a processing method. The primer is solvent-free and can realize odorlessness and zero discharge; a paint film can be naturally dried, sm