The invention provides a low-cost steel ladle bottom bricklaying method. The low-cost steel ladle bottom bricklaying method solves the problems that in the prior art, a steel ladle bottom bricklayingmethod is not reasonable, so that the service life is short. According to the low-cost steel ladle bottom bricklaying method, the steel ladle bottom adopts a mixed bricklaying method of refractory bricks and castable materials, the castable materials are cast at the ladle bottom of the steel ladle, first refractory bricks are constructed in a poured manner in the ladle bottom molten steel impact area, the first refractory bricks are arranged over the castable materials, the press recessing bricklaying manner is adopted the connection portion, between the castable materials and ladle wall bricks, in the ladle bottom non-impact area, and second refractory bricks are transversely accumulated and laid from top to bottom. By the adoption of the low-cost steel ladle bottom bricklaying method, when the refractory bricks are laid, a part of refractory bricks are laid on edges, the other part of refractory bricks are laid on ends, and then the steel ladle bottom is constructed in a casting manner through the castable materials, wherein the refractory bricks which are laid on ends achieve the functions of serving as a framework of the castable material layer and connecting the refractory brick layer and the castable material layer, and therefore the strength of the castable material layer is improved.