A water-based ecological paint composition for interior finishing materials of buildings comprising: - 3 to 6% by weight of diatomite to absorb harmful materials, in which the diatomite is chemically inactive and does not include any harmful substances, and It is used in the form of a natural material without calcination； - from 7 to 12% by weight of titanium dioxide to enhance a deodorizing effect； - 0.4 to 1.5% by weight of microcapsules containing antimicrobial agents to kill harmful microorganisms derived from an indoor air； - from 30 to 40% by weight of an inorganic binder to join different ingredients of the water-based paint composition to form a smooth surface, in which the inorganic binder has a primary function of binding together different ingredients of the composition of water-based paint, a secondary function to keep the surface flat and smooth, after agglutinating the different ingredients of the water-based paint composition with each other, and a tertiary function to assist non-flammable properties when the paint is Water base is used on an interior wall surface of buildings, and in which the inorganic binder is an inorganic binder solution prepared by mixing an alkali silicate solution, which is an inorganic compound, and an inorganic acid that has a strong acidity. in a weight ratio of 1: 0.5 to 2； - from 3 to 10% by weight of water to mix different materials for water-based paint and control operability； and - silica as the balance of a total weight of the composition, in which silica is a base material of a water-based paint and forms a thickness of a coating layer during operation.Una composición de pintura ecológica basada en agua para materiales de acabado interior de edificios que comprende: - de 3 a 6 % en peso de diatomita para absorber los materiales nocivos, en la que la diatomita está químicamente inactiva y no incluye ninguna sustancia dañina, y se usa en forma de un material natural sin calcinaciones； - de 7 a 12 % en peso de dióxido
