Beads were first prepared by the suspension copolymerization of styrene and divinyl-benzene in the presence of polystyrene．The swelling coefficient in toluene，apparent density，and percentage of porosity of the copolymer were then determined．The beads were later transformed into weakly basic anion exchange resins by the following methods：(1)The copolymer was chloromethylated and then reacted with tetraethylene-penta-amine．(2)The copolymer was nitrated and then reduced either by stannous chloride or by sodium polysulfide．From the experimental results，it was shown that the products obtained above possess higher exchange capacity，better mechanical property，and higher reaction rates for the in-troduction of ion exchange groups into the backbone structure than that obtained by the conventional method.