The invention relates to a pipeline deodorizing and dredging device, which is characterized in that the openings of two transverse pipelines at one side are connected by a vertical pipeline, the upper opening of the transverse pipeline at the other side is connected with a feed pipeline, and the lower opening of the transverse pipeline at the other side is connected with a discharge pipeline; the transverse pipelines, the discharge pipeline and the feed pipeline are all provided with corrugations, and a feed hopper is arranged at the upper end of the feed pipeline; fixing rings of the upper transverse pipeline and the lower transverse pipeline are connected by a shaking spring, and a pair of guide rails is arranged on the upper transverse pipeline and penetrates through the upper side of a moving frame; the upper transverse pipeline is arranged in the moving frame, and an auriform magnetic guide ring is respectively arranged at each of the two sides of the upper transverse pipeline and of the lower transverse pipeline and is connected with a free end of an opening of the moving frame; a magnetic dredging ring is arranged in each transverse pipeline. The pipeline deodorizing and dredging device has the advantages that the deodorizing effect is obtained by an elbow theory, the partial blockage dredging is achieved by a peristaltic principle, and the manual dredging cost is reduced.