Roller coating paint and preparation method thereof

The invention relates to roller coating paint and a preparation method thereof. The roller coating paint comprises the following components in parts by weight: 70-75 parts of organic silicon modified resin with tensile toughness, 20-25 parts of a solvent, 1-2 parts of silicone oil, 1-2 parts of a flatting agent and 0.5-2 parts of a dispersing agent, the paint can also comprise 3-8 parts by weight of a toner and 0.5-1 part by weight of a filler; the organic silicon modified resin with tensile toughness is composed of a high-temperature-resistant and high-toughness curing agent and organic silicon modified resin, and the weight ratio of the high-temperature-resistant and high-toughness curing agent to the organic silicon modified resin is (2-3): (8-7); and the high-temperature-resistant and high-toughness curing agent is prepared by mixing and reacting polyhydric alcohol and isocyanate, wherein the molar ratio of-NCO to-OH is (1.2-1.6): 1. The paint can solve the problems of poor heat resistance of tough polyes