PN mercapto-amine chelating resins were prepared by the reaction of chloromethylthiirane adsortal in the macroporous crosslinked polystyrene(PSt) bead as the first network with polyethylene polyamines to form acrosslinked polymers as the second network. The pore structure of the IPN chelating resins were measured. The resins show much less expanding extent in acid media and better adsorption properties for Ag+ and Au3+ than the corresponding gel chelating resins . The adsorption capacities for Ag+ and Au3+ are as high as 432mg Ag+/g and 553mg Au3+/g

respectively. The adsorption efficiencies for Au3+ are more than 99%.