The invention discloses a novel bridge crane main beam which comprises an upper flange plate, a lower flange plate, a web and a small web, and is characterized in that a first truss rod is connected with the small web via a third node plate; the first truss rod and a third truss rod are connected to the lower flange plate together via a first node plate; a second truss rod is welded to the web, the lower flange plate and the upper flange plate via a second node plate; a second transverse rib plate is arranged at a certain distance away from the outer side of the web; first longitudinal angle steel is arranged on the inner side of the web; second longitudinal angle steel and third longitudinal angle steel are respectively arranged at the central positions of the cross sections of the upper flange plate and the lower flange plate; and a first transverse rib plate and and longitudinal ribs are welded to the outer side of the small web.