The utility model discloses a passenger train chassis frame combination crossbeam, it includes piece under the last piece of crossbeam and two crossbeams, the both ends of terminal surface under the last piece of crossbeam are fixed respectively to the piece under two crossbeams, its characterized in that: all be equipped with the hole that a plurality of is used for reducing the concentrated stress on the crossbeam under piece and two crossbeams on the piece, be equipped with protrudingly on the crossbeam on the piece, all be equipped with down protrudingly under two crossbeams on the piece. The utility model discloses a strengthening rib with subtract the stress hole and has guaranteed that the crossbeam under the prerequisite of guaranteeing to arrange transmission system and be correlated with pipeline, pencil arranging, has sufficient intensity, can satisfy the demand that length was not more than 10m passenger train frame cross, practiced thrift the manpower greatly, improve production efficiency, its simple structure, low in manufacturing cost easily promotes.