The invention discloses an exterior wall paint prepared from the following raw materials in parts by weight: 86-90 parts of waterborne acrylic emulsion, 17-20 parts of styrene-acrylic emulsion, 20-50 parts of wollastonite powder, 2-3 parts of iso-octyl acrylate, 1-2 parts of potassium borate, 0.4-1 part of ethylene glycol dimethacrylate, 3-4 parts of tungsten boride, 1-2 parts of sodium dodecyl sulfate, 0.6-1 part of dibenzoyl peroxide, 3-4 parts of absolute ethyl alcohol, 0.8-1 part of gamma-aminopropyltriethoxysilane, 0.1-0.2 part of polyoxyethylene polyoxypropylene ether, 3-5 parts of coalescing agent and 10-20 parts of deionized water. The paint produced by the invention is low in raw material loss, less in gel generation, simple in process, firm in paint film, good in glossiness, strong in impact force resistance, not easy to crack, soft in texture, strong in decoration, high in weather and scrubbing resistance, strong in adhesive force, long in service life, free of special smell, heavy metals such as mercury, lead and the like and formaldehyde volatiles, and capable of meeting the technical requirement of an environment-friendly paint; and the added coalescing agent has very high stability, efficient adhesiveness and film forming property, so that the density of the paint film is increased, the film forming quality is improved, and a film layer has the advantages of strong adhesive force, no hole and rift, densification, uniformity and the like.