Cross-linked polystyrene+supported polyethylene glycol and pyfidinium asbicenwal polymer-supported phase transfer catalyst was prepared by usingchloromethylated DVB-PS resin as supporter

on which PEG-400 and pyridine wereimmobilized successavely．The IR spectra of chloromethylated polystyrene resin

polystyrene-supported PEG-400 resin

polystyrene-supported pyridinium resin and the bicentral resinwere obtained and analyzed The catalytic activity of the three laters aspolymer-supported phase transfer catalyst was tested in the reaction of solid potassiumacetate with benzylbromide by GC analysis．It was found that the bicentral catalyst-Dolystyrene-supported PEG and pyridinium performed higher phase transfer catalytic ac-fivity than the monocentral polystyrene-supported PEG or polystyrene-supported pyfidinium.