The utility model discloses steel floor is marked time for coal transporting trestle belongs to the coal belt -conveyor field, and the purpose reduces the consumption material saving cost of steel. Say fixed connection in the steel ladder step of girder steel including N, the steel ladder step is including kickplate and footboard, the footboard includes tread board and the connecting plate of the slope for A, tread board one end links to each other with kickplate, and the other end links to each other with the connecting plate, the kickplate and the N in N way steel ladder step 1 say that the connecting plate in steel ladder step splices. The utility model discloses, steel ladder step usefulness is made promptly to kickplate, tread board and connecting plate, also does the steel floor simultaneously, has avoided independent preparation steel ladder step and steel floor, has practiced thrift the material loss of partial steel floor, can practice thrift 45% steel, just, during the installation, the equipment that whole steel floor was marked time has just been accomplished to the direct mount steel ladder step, installs the steel floor with traditional elder generation, fixes the steel ladder step and compares with the mode of steel floor, has practiced thrift installation procedure.