Polymer bound palladium complex catalyst with grafting acrylonitrile on inorganic compound (MgO, Y-molecular sieve silica) by pre-radiation method were studied.,The palladium- grafting polymers has been investigated by X-ray photoelectron spectroscopy (XPS) . It is indicated that peak width of C,1S, and O,1S, spectra of MgO-g-PAN-Pd (radiation-induced graft) is more than that of MgO-PAN-Pd (chemical graft) and peak numbers of former are one more than later.,According to report in reference, this peak is attributed to ,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42767600&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42767589&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42767601&type=, group. Thus, the graft acrylonitrile on MgO may complete through oxygen atoms in MgO and ,β,-carbon atoms in acrylonitrile. Polymer catalyst obtained by radiation grafting is a higher active hydrogenation catalyst for olefines and better antitoxic than that of one obtained by chemical method, and it has selectivity for hydrogenation catalyst.