The invention relates to high-performance water-based heavy anti-
corrosion paint and a preparation method thereof, and belongs to the technical field of water-based anti-
corrosion paint. The water-based heavy anti-
corrosion paint comprises water-based 
epoxy zinc rich primer, water-based 
epoxy graphene-modified intermediate paint and water-based 
polyurethane finishing paint, wherein an intermediatecoating uses the water-based 
epoxy graphene-modified intermediate paint; properties, such as an extra-large specific surface area, good barrier property, high 
chemical stability and good electrical 
conductivity, of 
graphene are utilized, so the overall performance of the anti-corrosion compound 
coating is greatly improved, for example, an 
adhesive force of the 
coating to a base material is reinforced, the 
abrasive resistance and the anti-corrosion property of the paint are improved, and the 
coating has the characteristics of 
environmental protection and safety, and no secondary 
pollution andthe like. Three types of the paint are compounded for using, a thickness of a paint film can be greatly reduced under the 
precondition without affecting the anti-corrosion property, and the requirements of lightweight coating are satisfied. The preparation method of the water-based heavy anti-corrosion paint is simple, and suitable for industrial production, and raw materials are easily obtained.