The epoxy-functionalized porous polymer was synthesized by UV irradiated copolymerization using ethylene glycol dimethacrylate (EDMA) as the crosslinker, glycidyl methacrylate (GMA) as the functional monomer, and PEG 200 as the porogen. The X-rays photoelectron spectroscopy analysis shows that epoxy groups were confirmed on the prepared copolymer. The SEM images results show that the copolymer exhibited a porous structure. The horseradish peroxidase (HRP) was immobilized by chemical bonding methods. The micro pores in the polymer could significantly promote the amount of the immobilized HRP. The binding capacity of the polymer for HRP is ap-proximately equivalent to 29.6 mg / g.Cited