Negative ion coating for artware

The invention relates to a preparation method and application of a negative ion coating for artware, belonging to the technical field of coating preparation. The coating is prepared from the followingraw materials in parts by weight: 80-150 parts of filler, 1-50 parts of negative ion powder, 100-150 parts of deionized water, 80-150 parts of emulsion, 1-2 parts of a dispersing agent, 0.1-0.5 partof a defoaming agent, 0.1-0.5 part of an anti-cratering agent, 0-10 parts of a thickening agent, 0-10 parts of propylene glycol and 0-5 parts of a mildew preventive. The negative ion coating for the artware can permanently release 2000-4000 negative ions per cubic centimeter due to the addition of a negative ion release material, and can be used for purifying the indoor air by utilizing the sterilization, deodorization and negative ion release functions of the negative ions. Furthermore, the coating is especially suitable for artware made from iron and a wood base material, and can be used forperforming technologies su