The invention discloses ink capable of being used for disc printing and a preparation method thereof. The ink comprises the following components in parts by mass: 0.5-8 parts of water-soluble dyes, 2-15 parts of water-based resin, 5-30 parts of an organic solvent, 0.1-0.5 part of a preservative, 0.2-3 parts of surfactants, 0.1-1 part of a pH regulator, 0.05-0.5 part of a levelling agent and 40-80 parts of water, wherein the water-based resin is at least one of water-based acrylic resin and water-based styrene-acrylic resin or styrene-acrylic emulsion; the levelling agent is one of BYK345, BYK347, BYK348, BYK349, Hydropalat<(R)>140 and EFKA-3580. The ink has the beneficial effects that through adding the water-based acrylic resin and the water-based styrene-acrylic resin or styrene-acrylic emulsion to the ink, the scuff resistance of patterns obtained after jet printing, the gradation property and the waterproofness can be effectively improved; the ink can be endowed with better levelling property and diffusion of the ink can be reduced by adding the levelling agent, so that the edges of patterns and characters obtained after printing are clear and sharp.