Sofa with steel rack

The utility model relates to a steel frame sofa comprising a sofa seat cushion, a sofa back cushion, a seat frame which is used to support respectively the sofa seat cushion and the back cushion and a back frame standing at the back of the seat frame. The seat frame is composed of a steel square frame. A transverse fixing steel beam and a vertical fixing steel beam which are perpendicular to each other and across each other are arranged in the upper frame of the seat frame. The front frame and the side frame of the seat frame are respectively provided with fixing standing beams. The back frame is composed of a wedge stereo frame the upper part of which is wider than the lower part. The front frame and the rear frame of the back frame are respectively provided with a transverse reinforcing beam and a vertical reinforcing beam which are across each other. One side or two sides of the seat frame is or are provided with a steel stereo handle frame and a stereo handle support which is connected at the inner upper