The invention discloses a polymer antibacterial, corrosion-resistant and antifouling paint, which belongs to the technical field of building materials. It is prepared from the following components by weight: 18-29 parts of titanium dioxide, 15-30 parts of acrylic acid copolymer emulsion, 5-10 parts of polyethylene wax emulsion, 16-28 parts of deionized water, antibacterial peptide-inorganic metal ion 10-20 parts of complex, 3-6 parts of asbestos, 3-5 parts of dispersant, 2-4 parts of defoamer, 90-150 parts of polyol, 8-16 parts of silicone resin, 11-20 parts of crosslinking agent , 2-9 parts of glacial acetic acid, 10-20 parts of methyl ethyl ketone, 15-35 parts of anti-ultraviolet agent, 50-90 parts of copper oxide, and the rest are solvents and fillers. The beneficial effects of the present invention are that it is not easy to solidify, has a long storage time, has good anti-fouling performance, and has an anti-ultraviolet function, strong adhesion between the paint coating and the cooling fins, good water resistance, and high corrosion resistance. Conducive to environmental protection.