The invention relates to a horse stool bar and an application method. The horse stool bar is formed by the condition that a short bent rod is vertically arranged at one end of a supporting rod; one end of a steel bar is bent into 90 degrees to form the supporting rod and the short bent rod connected with the supporting rod; the supporting rods are uniformly distributed and welded on the transverse and longitudinal joints of of full-length steel bars of the upper layer and the lower layer according to the stress situation of the upper steel bars; one end of the supporting rod connected with the short bent rod is arranged on a concrete panel or a template; and the other end of the supporting rod is higher than the horizontal plane of the steel bar on the upper layer according to equal altitude. According to the horse stool bar disclosed by the invention, the quantity of the steel bars can be reduced, the thickness of a protective layer of the steel bar is ensured, the evenness of the concrete is improved and the consumption of labour force is reduced.