A novel polymeric ultraviolet absorber (UVA) poly (HAB-co-AMC-co-AA) (PHHA) has been prepared by solution copolymerization from 2-hydroxy-4-acryloy benzophenone (HAB), p-acryloy-methyl cinnamate (AMC) and acrylic acid and analyzed using FT-IR, UV-Vis, H-1 NMR and GPC. The results revealed two PHHA absorption peaks in UV-A and UV-B. Polymerizable monomer HAB was synthesized by the reaction of 2,4-dihydroxybenzophenone (UV-0) and acryloyl chloride (AC). Another monomer, AMC, was prepared from p-hydroxy-methyl cinnamate and AC. The results showed that HAB and AMC have high UV-absorbing performance in UV-A and UV-B, respectively. The photoantioxidant ability tests indicated that PHHA is an effective polymeric UVA that covers UV-A and UV-B ranges, and a synergism between the two monomers was observed.