The utility model discloses a combined material floor for railway flatcar, include: the operational layer sets up one side of operational layer, the spraying layer that is used for the directness and treats the load contact, with the opposite side of operational layer passes through the enhancement layer that the adhesive was fixed mutually, the operational layer is glass fiber reinforcement's polyurethane foam structure. When being applied to railway flatcar, because of the operational layer is glass fiber reinforcement's polyurethane foam structure, glass fiber has been added promptly in the polyurethane foam structure, so can improve its nail -holding ability and the anti power of splitting, and the existence on spraying layer is further protected the operational layer, has improved its wearability, is convenient for change and restore, has prolonged life. Therefore, the utility model provides a mechanical properties and ageing resistance in can guaranteed in the combined material floor, improve railway flatcar and with the holding the nail, resist and split and wear resistance of floor, have lengthened life, and the effect of its fire resistance is improved again to the while, has solved the difficult problem among the prior art.