The invention discloses an ultraviolet light-cured adhesive, which contains aliphatic polyurethane acrylate, an activated thinner and a photoinitiator, and also can contain bisphenol A epoxy acrylate and a leveling defoaming agent. The ultraviolet light-cured adhesive disclosed by the invention has high curing speed, good light transmittance and good toughness and other chemical properties and mechanical properties, and is suitable to be applied to ultraviolet nanoimprint lithography. In addition, the invention also discloses a method for preparing a super-hydrophobic thin-film material from the ultraviolet light-cured adhesive, and the method has a simple process, no need of complicated equipment and low energy consumption and can realize continuous production and preparation.