Microporous hollow fiber membranes containing ion-exchange group were prepared by radiation-induced graft polymerization of glycidylmethacrylate(GMA), subsequently, the epoxt group produced in the GMA-grafted hollow fiber was converted into sulfonic acid group(SO3H)and Hydroxylamine group(H2NOH). These fibers were evaluated to measure of the adsorption capacity of ammonia and fomaldehyde.