The invention discloses a self-cleaning water paint. The self-cleaning water paint is prepared from, by weight, 35-50 parts of water-borne-acrylic-modified
epoxy emulsion, 5-20 parts of amino resin,
pigment and assistants, wherein the
pigment is prepared from, by weight, 3-20 parts of
titanium dioxide, 1-9 parts of light expanding
powder and 1-10 parts of organic
silicone powder; the assistants are prepared from, by weight, 0.1-0.2 part of a PH adjusting agent, 0.1-0.2 part of an antifoaming agent, 2-5 parts of a silm forming assistant, 1-10 parts of an efficient
lotus-
leaf water repellent agent, 0.3-0.5 part of a
wetting dispersant, 0.3-0.5 part of a base-material
wetting agent, 5-10 parts of deionized water and 0.5-1.0 part of a
thickening agent. The self-cleaning water paint is the ultralow-VOC water-based light-industry water paint, the hydrophobicity of a
coating is improved for reducing the contact area between the
coating and water and shortening
contact time between the
coating and water, and the aim of improving the waterproof performance of the coating is finally achieved. The invention also provides lamp-cover-or-
metal-painting application of the self-cleaning water paint and the lamp cover; the lamp cover is coated with the self-cleaning water paint.