The invention relates to finish-coat paint for real stone paint, wherein the finish-coat paint is prepared from the following components in parts by weight: water, a germicidal and anti-corrosion agent, bentonite, an aqueous solution of 2-amino-2-methyl-1-propanol with mass concentration of 90-95%, a defoamer, a dispersant, a wetting agent, a lotus leaf hydrophobing agent, lotus-leaf-effect organosilicone hydrophobic emulsion, a coalescing agent, a cosolvent, the defoamer, a thickening agent and a rheological auxiliary. The finish-coat paint for the real stone paint overcomes the defects that the existing finish-coat paint for the real stone paint is poor in stain resisting effect and is free from self-cleaning ability, and has the advantages that excellent hydrophobicity, excellent stain resistance and a photocatalystic self-cleaning function are achieved, and the service life of the real stone paint can be prolonged.