The utility model discloses a communication-hole steel beam. The communication-hole steel beam comprises a plurality of steel tubes, an upper flange plate, a lower flange plate and webs, wherein the steel tubes are vertically and densely connected and arrayed along the length direction of the beam; the upper flange plate is welded on the upper surfaces of the steel tubes; the lower flange plate is welded on the lower surfaces of the steel tubes; and the webs are arranged at the outer end of the steel tube at the outmost side and among the steel tubes, the upper flange plate and the lower flange plate, and connected into a whole by welding joints. The communication-hole steel beam disclosed by the utility model is convenient and simple in equipment pipeline penetration, convenient in construction and production, and high in material utilization rate.