In order to reduce the heat radiation of ultraviolet (UV) curing system, based on the optical thin-film theory, with HfO2, AlF3 and Cr as coating materials, and by use of the reflection and absorption combined structure, the filter film system with high reflection in the UV band and high absorption in visible-near infrared band is designed. The soundness of the thin film is improved by coating Al film as the transition layer between the substrate and the film system. After the optimization of process parameters, the filter film with average reflectivity of 90.6% in 220-400 nm wave band and average absorptivity of 92.4% in 420-2000 nm wave band is developed.