The invention relates to UV (Ultra Violet) offset printing carrier oil, connection UV offset printing gloss oil and preparation methods thereof. The offset printing ink comprises UV offset printing carrier oil and connection UV offset printing gloss oil, wherein the UV offset printing carrier oil is prepared from a polyester acrylate oligomer, filling, a reactive diluent, a high-viscosity additive, and the like by firstly adding a dispersant and resin, grinding the filling to a qualified degree of fineness and then adding the active diluent, a photoinitiator and the high-viscosity additive tostir and disperse together at a high speed, the connection UV offset printing gloss oil is prepared from a high-functional urethane acrylate oligomer, a dual-functional urethane acrylate oligomer, a photoinitiator, a leveling agent, and the like by stirring at a high speed, filtering, and the like. The offset printing ink and the method enable a printed product to generate the special concentration effect so as to obtain various special surface printing effects.