Building green steel structure

The invention relates to the technical field of temporary shed frame building, and discloses a building green steel structure which comprises a steel column and a connecting structure, and the connecting structure comprises a limiting column, a fixed column, a locking block, a movable block, a movable rod and a connecting block; the top end of the steel column is fixedly connected with one end of the limiting column, a limiting hole is formed in the bottom end of the steel column, the fixed column, the check block, the locking block, the movable block, the movable rod, the connecting block, the connecting rod and the resisting plate are arranged, the fixed column is clamped in the connecting groove, then the fixed column is screwed by 90 degrees, the check block is made to make contact with the locking groove, and due to the fact that the movable block is movably connected with the movable groove, the limiting hole is formed in the bottom end of the steel column. When the movable rod is rotated and used, the