Steel structure supporting frame used in architectural design

The utility model relates to the technical field of supporting frames, in particular to a steel structure supporting frame used in building design, which comprises a supporting column, a supporting plate is arranged at the top of the supporting column, movable boxes are arranged on two sides of the supporting column, a motor is arranged at the top of an inner cavity of each movable box, and a screw rod is arranged at the output end of each motor. The bottom of the threaded rod is movably connected with the bottom of an inner cavity of the movable box, the surface of the threaded rod is sleeved with a threaded sleeve in a threaded mode, movable plates are arranged on the two sides of the threaded sleeve, movable grooves matched with the movable plates are formed in the two sides of the inner cavity of the movable box, and fixing rods are arranged at the bottoms of the movable plates. When the stability of the supporting frame needs to be improved, the motor operates, the screw is driven by the motor to rotate,