Abstract: The crosslinking reaction of vinyl-carboxyl terminated tetrafuranpropylene oxide copolymer with glycidyl methacrylate has been investigated. The effects of component ratio and catalyst on the mechanical properties of the product were observed. The changes of vinyl groups and epoxy groups were followed by IR spectrum measuvement during the reaction process. The result indicates that the reaction of epoxy and carboxyl groups proceeds more difficultly than the addition reaction of vinyl groups.It is considered very important to choose an efficient catalyst to control the relative reaction rates and conversion degree of the two reactions. The number of the effective crosslinking chains per unit volume (V_o)and the average moecular weight between crosslinks (M_c) were determined by means of equilibrium swelling technique. The mechanical properties were improved with increase of crosslinking density. V., M_c and mechanical properties were influenced by the content of the catalyst used.