We have developed a strategy to immobilize beta-galactosidase as a model enzyme by using polymeric supports having Schiff bases, which were prepared from (aminomethyl) polystyrene and 2-phenlyindole-3-carboxaldehyde by condensation. beta-galactosidase was immobilized onto the new polymer supports via covalent bonds. The influence of temperature, pH, reusability, and storage capacity on the free and immobilized beta-galactosidase was investigated. Our results indicate that the (aminomethyl) polystyrene with Schiff bases is most suitable for the immobilization of beta-galactosidase. These kinds of new supports can be used for the immobilization of beta-galactosidase due to their strong storage capacity and reusability.