The invention is applicable to the technical field of building waterproof paint, and discloses environment-friendly fast-setting building waterproof paint which comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight, 70-80 parts of EVA (ethylene-vinyl acetate) emulsion, 10-15 parts of inorganic fillers, 0.3-0.5 part of coagulating agents, 0.5-1 part of stabilizing agents, 0.2-0.3 part of dispersing agents, 0.2-0.3 part of defoaming agents, 0.15-0.25 part of sterilizing agents and 5-15 parts of water. The component B is prepared from the following raw materials in parts by weight, 12-23 parts of setting accelerators, 2.5-8 parts of promoters and 8-14 parts of water. According to the environment-friendly fast-setting building waterproof paint, the EVA emulsion serves as a main film-forming matter which is the component A, liquid alkali-free setting accelerators and nanometer film-forming promoters form the component B of curing agents, construction can be achieved in an atomizing spray mode, the paint is short in film-forming condensation time, uniform in thickness, high in tensile strength and elongation rate, green and environmentally friendly, construction intensity is greatly reduced, and construction efficiency is improved.