The invention relates to a waterborne acrylic polyurethane surface paint. The paint is prepared from the raw materials of, by weight: 150 to 200 parts of waterborne acrylic resin, 200 to 300 parts of deionized water, 1 to 3 parts of an antifoaming agent, 180 to 200 parts of titanium pigment, 1 to 3 parts of a neutralizer, 2 to 6 parts of aluminum tripolyphosphate, 100 to 150 parts of precipitated barium sulfate, 10 to 20 parts of a rheological auxiliary agent, 2 to 4 parts of a flash corrosion inhibitor, 25 parts of saponite, 1 to 3 parts of a leveling agent, and 0.5 to 2 parts of a catalyst. The paint provided by the invention has the following advantages: 1. environment pollution is reduced, and energy is saved; 2. the paint has strong adhesive forces on various base materials, and the coating has high hardness, good water resistance, good weatherability, good chemical resistance, and relatively high wear resistance; 3. the paint can be used as terrace and floor paint, metal rust-resisting paint, ship paint, and can be applied on automobiles, light industrial products and drinking-water cylinder inner walls for preventing corrosion.