The present invention, as olefins dog hwanbok by hydrogenating the polymer degradation on how to get his hydride with high yield, a specific one of the olefin polymer hwanbok decomposition, the amine compound of general formula (2) _{MH k Q m T p Z q} (2) [Wherein, k is an integer of 0 or 1, m is an integer of 1~3, p is an integer of 0 or 1, q is an integer of 2~4, M is ruthenium, rhodium, osmium, iridium, palladium, platinum or nickel atom, H is a hydrogen atom, Q is a halogen atom, T is CO, NO, toluene, acetonitrile or tetrahydrofuran, Z is represented by the general formula (3) ^{PR '1 R' 2 R '} 3 (3) (Wherein, P is a person _sleeping, R ^'1, R' ² and R ^'3 are, independently, straight, branched or cyclic alkyl group, a straight, branched or cyclic alkenyl group, a straight, branched or cyclic aryl group, straight, branched or cyclic alkoxy groups and straight, branched or cyclic aryl group be a one member selected from the group consisting of aryloxy groups, equal to each other are different being) hydrogenated made of an organic metal complex represented by the organophosphorus compound being] represented by the use of the catalyst is characterized in that hydrogenation in the presence of hydrogen.