The invention provides waterborne automobile finish paint. The waterborne automobile finish paint is prepared from the following components in parts by weight: 3.8 to 4.7 parts of a defoaming agent, 32 to 35 parts of waterborne acrylic emulsion, 1.1 to 1.3 parts of a pH (Potential of Hydrogen) regulator, 23 to 27 parts of waterborne amino resin, 1 to 1.4 parts of a shrinkage-proof agent, 0.7 to 1part of a dispersant, 12 to 15 parts of nano ceramic powder transparent resin, 3 to 3.9 parts of a film-forming auxiliary agent, 5 to 7 parts of a waterborne polyurethane thickening agent, 12 to 15 parts of water, 4.7 to 5.9 parts of a leveling agent, 0.8 to 1.1 parts of a sterilization agent, 2.2 to 2.4 parts of an organic silicon surfactant, 1.2 to 1.4 parts of an adhesion promoter, 0.5 to 0.7 part of an anti-settling agent, 1.1 to 1.5 parts of nano illite/smectite clay, 2 to 2.5 parts of waterborne silver slurry and 2.3 to 2.8 parts of waterborne nano color paste. The waterborne automobilefinish paint provided by the invention has the following beneficial effects that the components and technological steps are optimized and the stability of a system is improved; the waterborne automobile finish paint has good mechanical properties, excellent protection performance, high glossiness, environment friendliness, bright color and high fullness; meanwhile, a preparation method of the waterborne automobile finish paint in the application is simple and the technological cost is low.