Preparation method of carton anticorrosive paint

The invention provides a preparation method of carton anticorrosive paint. The preparation method comprises the steps that pure water is heated to 45-50 DEG C, the temperature is maintained, pepper, soybeans, coptidis rhizoma and cortex phellodendri are added and boiled, boiled liquid is extracted 5-6 times by a reflux extraction method, and extract is collected; propyl gallate, eugenol, polyacrylate and methane thiocyanate are added to an alcohol solvent and slowly heated to 30-35 DEG C and stirred well while heating until mixing is uniform, and a mixed solution is obtained; the extract and the mixed solution are cooled to 20-25 DEG C, and then the mixed solution is added to the extract and thoroughly mixed; and fibers are added to the mixed solution and thoroughly stirred, and the cartonanticorrosive paint is obtained. The carton anticorrosive paint can effectively inhibit the formation of bacteria, reduces the degree of decay of a carton, prolongs the service life of a corrugated box, and has very good eco