Epoxy iron-cloud paint is used as the intermediate layer of anticorrosion supporting coating.It not only plays the role of increasing the thickness of coating,but also requires that the coating has excellent acid and alkali resistance and chemical resistance.The preparation method of epoxy-thick slurry iron-cloud intermediate paint was discussed.The film can be cured at low temperature,and has excellent acid and alkali resistance and chemical resistance.The volume solid content is 80%,the content of volatile organic solvents is less,the thickness of one construction can reach more than 150μm,in line with the development direction of environment-friendly coating.