Combined structure building

The invention provides a combined structure building which comprises a steel frame wall structure, a cross beam and a floor system. The steel frame wall structure comprises a wall body, a steel columnand a glass wool board; the steel column is embedded in the wall body; and in the thickness direction of the wall body, the glass wool board is arranged on the indoor side and/or the outdoor side ofthe steel column and is used for blocking the steel column from serving as a heat bridge to transfer heat flow between the inner side and the outer side of the wall body. According to the combined structure building, the heat insulation effect is remarkable, and the cost is low, the glass wool board is laid on the outdoor side surface or the indoor side surface of the steel column, so that the heat transfer caused by the steel column serving as the heat bridge is effectively reduced, the heat flow concentration on the indoor side and the outdoor side of the wall body at the position of the steel column is eliminated, t