The utility model discloses a fast light steel constructional column of formula that connects, light steel pterygoid lamina including two vertical parallel set up is equipped with a light steel web between two light steel pterygoid laminas, top and bottom at light steel web are equipped with an adapter plate respectively, and both ends are equipped with a notch respectively about each adapter plate, be equipped with a plurality of connection pieces group in the left and right sides of light steel web, each connection piece group includes two connection pieces, the medial extremity and the light steel web welding of each connection piece, and the end is equipped with vertical elbow in the outside of each connection piece, connection piece group is including the long connection piece group and short connection piece group that set up in turn from top to bottom. The utility model discloses the creative light steel of adoption replaces the concrete as the constructional column, and in the work progress that carries out the infilled wall brickwork, installation procedure is few, the work efficiency is high, the time limit for a project is short, low in cost just can control the quality of constructional column.