An epoxy floor paint construction method comprises the following steps: step 1, a component A and a component B of epoxy floor paint are mixed uniformly at the volume ratio of 1:2, and roller-applied to form a priming coat to close capillary pores on the surface of original base concrete so as to enhance the bonding strength betweenthe base concrete and a paint coat; step 2, the component A and the component B of the epoxy floor paint are mixed and homogenized at the volume ratio of 1:2, and added and mixed with quartz sand of 40-80 meshes to prepare epoxy quartz mortar, and the epoxy quartz mortar is blade-coated to form an intermediate coat; steps 3, the component A and the component B of the epoxy floor paint are mixed and homogenized at the volume ratio of 1:2, added and mixed with quartz powder of 300 meshes to prepare epoxy resin putty, and the epoxy resin putty is fully blade-coated once or twice to fill in sand holes to prepare for coating of a finishing coat; step 4, the component A and the component B of the epoxy floor paint are mixed and homogenized at the volume ratio of 1:2, and coated with a trowel to form the self-leveling finishing coat. According to the method provided by the invention, water-based epoxy priming paint is employed to reinforce a base, stabilize dust residual particles on a base surface, increase the bonding strength between the base surface and the coats and play a role in closing residual alkali on the base surface.