The invention relates to a reversing valve which comprises a valve body. A valve element is arranged in the valve body. An end opening A, an end opening B, an end opening C and an end opening D are formed in the valve body. An end opening E is formed below the end opening A. An end opening F, an end opening G and an end opening H are formed in the side edge of the valve element. An end opening I is formed in the lower end of the valve element. The end opening F communicates with the end opening G; the end opening H communicates with the end opening I; and the end opening I communicates with the end opening E. The end opening A, the end opening B, the end opening C, the end opening D and the end opening E are arranged to be used for being connected with a dust remover vent, a dust collection pipeline, an air outlet and an exhaust opening of a dust remover correspondingly. The end opening F, the end opening G, the end opening H and the end opening I are arranged, the end opening F communicates with the end opening G, and the end opening H communicates with the end opening I, so that two channels are formed in the valve element, and the valve element is rotated to control reversing. The reversing vale is reasonable in design and can be popularized on a large scale.