The invention discloses a steel bar horse stool, which comprising a full-thread screw. The top end of the full-thread screw is in threaded connection with a quincuncial handle, the middle of the full-thread screw is in threaded connection with a plastic buckle nut, the bottom end of the full-thread screw is in threaded connection with a lengthened nut, the outer wall of the lengthened nut is in welded connection with the middles of three or more steel bar supports, the steel bar supports are evenly distributed in the circumferential direction of the lengthened nut, and the steel bar supports are steel bars bent into a shape like a Chinese character 'ji'. The steel bar horse stool is simple in structure and low in cost, and is especially suitable for factory mass production; and on-site mounting is easy and convenient, supporting is stable and firm, precision and reliability are achieved, the thickness of a steel bar protection layer can be precise to millimeter, use of different platethicknesses can be met, universality is high, and main parts can be utilized in a circulation mode.