The invention discloses water-based UV (
ultraviolet) ink, consisting of the following components according to a certain weight percentage: water-based light-cured resin, an activated
monomer, a
photoinitiator, pigments, assistants and a
diluent. The assistants consist of a
photosensitizer, a
polymerization inhibitor, a leveling agent, a defoaming agent, a
wetting and dispersing agent, an anti-rubagent, a thixotropic agent and a light stabilizer; and the pigments consist of direct dye,
reactive dye and paint. The invention also discloses a preparation method of the water-based UV ink, which comprises the following steps of: weighing the components and sequentially adding the
photoinitiator and the water-based light-cured resin into the activated
monomer; dissolving the direct dye or the
reactive dye in the
diluent and then adding the dissolved substances, adding the assistants, evenly stirring the mixture and collecting the materials to obtain the water-based UV ink; or taking a certain amount of the
wetting and dispersing agent, dispersing the pigments in the
wetting and dispersing agent and then adding the dissolved substances, and evenly stirring the mixture; and adding the rest assistants and the
diluent, stirring and then heating the mixture, and collecting the materials to obtain the water-based UV ink. According to the invention, the problem of incapability of the water-based UV ink to multiple kinds of printing
modes in the prior art is solved. The preparation method is simple and easy to implement.