Waterborne epoxy emulsion is used for a new type of epoxy resin coating which is formed by mixing epoxy resin with water and stabilizing it with emulsifier. Compared with traditional solvent based epoxy coatings, waterborne epoxy emulsion has the advantages of environmental protection, non-toxic, tasteless, easy cleaning, easy construction, etc. At the same time, waterborne epoxy emulsion also has excellent film performance, with high hardness, abrasion resistance, chemical corrosion resistance and water resistance, and is widely used in the fields of architecture, automobile, electronics, furniture, etc.