Air supply pipeline and railway vehicle

The utility model relates to the technical field of air supply pipelines, and discloses an air supply pipeline and a railway vehicle. The air supply pipeline is used for being installed adjacent to the side wall of the air demand space. The air supply pipeline comprises a pipeline body. An air supply channel extending in the axial direction of the pipeline body is formed in the pipeline body. Theair supply duct comprises a top duct wall, a bottom duct wall, an inner duct wall used for being close to the side wall of the air demand space and an outer duct wall used for being away from the sidewall of the air demand space. The air supply channel is provided with an air inlet and comprises an air outlet, and the air outlet is suitable for being adjacent to the side wall of the space needingair so that air outlet flow exhausted from the multiple air outlets can flow downwards along the inner side surface of the side wall. In actual use, the air supply pipeline can effectively prevent outlet air entering the air d