The porous ferric GMA-DVB polymer was synthesized from glycidlymethacrylate (GMA) and divinyl benzene (DVB) by suspension polymerization with lauryl alcohol and cyclohexanol as pore-forming reagents in the presence of FeCl 3 and FeCl 2 . The structure and the magnetism of the GMA-DVB polymer beads were featured with magnetic scales, X-ray spectroscopy and scanning electron microscope (SEM). Aspergillus Oryzae β-galactosidase was bounded on the magnetic polymer under the best terms, and the maximum activity was determined to be 271.25U/g dry carries. Meanwhile, the fundamental properties about the bounded enzyme, such as the influence of temperature and pH, were assayed and the satisfactory results were got.