The aim of this work was to study the effect of the components of UV varnish on the glossiness, adhesion fastness and curing time of the copper printing paper after polishing, and to develop a UV varnish formula with good performance for copper printing paper. Appropriate prepolymer, monomer and photoinitiator were selected to prepare different UV varnish by changing the contents of the components. The changes of the performance were observed. The best formula was prepolymer epoxy acrylate (30%), PUA (15%); Monomer TMPTA (36%), TPGDA (4.5%), DPGDA (4.5%); Photoinitiator Irgacure 907 (3.6%)， Darocure184 (0.9%), BYK-320 (0.5%). The glossiness and adhesion fastness of the copper printing paper were improved and the film curing time was shortened when the prepolymer EA ∶ PUA was 2 ∶ 1, photoinitiator 907∶184 was 4∶1, and monomer TMPTA∶TPGDA∶DPGDA was 8∶1∶1.