Water-based environment-friendly and low-carbon finishing paint and preparing method thereof

The invention discloses water-based environment-friendly and low-carbon finishing paint. The water-based environment-friendly and low-carbon finishing paint is composed of a mixture and deionized water, and the weight percent ratio of the mixture to the deionized water is 9:7 to 11:5. The mixture is prepared from, by weight, 40% to 50% of water-based acrylic resin, 2% to 5% of isocyanate curing agents, 25% to 30% of rustproof pigment filler, 5% to 10% of assistants and 15% to 25% of acetic anhydride. The rustproof pigment filler is prepared from titanium dioxide, barium sulfate, color paste and rustproof pigment. A preparing method for preparing the water-based environment-friendly and low-carbon finishing paint includes the following steps of preparing a water-based acrylic resin solution, the rustproof pigment filler and the assistants; then evenly mixing and stirring the isocyanate curing agents and the water-based acrylic resin solution; then sequentially adding the rustproof pigment filler, the assistants and the acetic anhydride, stirring the mixture while adding, and finally carrying out dilution. The water-based environment-friendly and low-carbon finishing paint has the advantages of being good in paint film adhesive force, rigidity, corrosion resistance and weather resistance.