Water-based colorant for dust suppression as well as preparation method and application thereof

The invention provides a water-based coloring agent for dust suppression as well as a preparation method and application thereof, and the water-based coloring agent for dust suppression comprises the following components in percentage by weight: 30-50% of pigment filler, 8-20% of rheological additive, 3-15% of thickening suspending agent, 1-5% of surfactant, 0.5-1% of defoaming agent, 0.05-1% of preservative and the balance of water, the pigment filler comprises a pigment and a filler, and the pigment is a compound pigment of phthalocyanine green and iron oxide green. According to the water-based coloring agent for dust suppression provided by the invention, the phthalocyanine green and iron oxide green composite pigment is selected as the pigment, the phenomenon that the product is blue when the iron oxide green is independently used is effectively improved, and the covering power and the storage stability of the coloring agent are improved by compounding and adding the substrate filler. Besides, the compone