The invention belongs to the technical field of fixed buildings, discloses a processing arrangement of a blast furnace cast house and provides a combined arrangement mode of two blast furnace cast houses. The invention discloses an arrangement mode of a blast furnace cast house. The processing arrangement of the blast furnace cast house consists essentially of a cast house platform, a tuyere platform and a molten iron transportation line, and is characterized in that the cast house platforms of the two blast furnaces are connected into an integral platform; the tuyere platforms of the two blast furnaces are connected into an integral platform; and the molten iron transportation lines of the two blast furnaces are centrally arranged under the two blast furnace platforms. The processing arrangement realizes compact arrangement of the two blast furnaces, thereby achieving the purposes of saving occupied area, and leading the general arrangement to be more flexible; in addition, a great number of blast furnaces are shared, thereby not only achieving the purpose of saving investment, but also effectively reducing the management and operation costs. The processing arrangement can be applied in the planning and construction of the blast furnaces.