The invention discloses a railway vehicle and a pipeline protection device thereof. The pipeline protection device comprises a bracket used for supporting a pipeline of the railway vehicle. The two ends of the bracket are provided with a first rotary part and a second rotary part correspondingly. The first rotary part and the second rotary part are supported at an end underframe and a rotary underframe for rotating the railway vehicle correspondingly. The first rotary part and the second rotary part are rotatably connected in the vertical plane and the horizontal plane correspondingly. The bracket can stretch and contact in the length direction. Regardless of whether in the rotating process of the rotary underframe or in the normal running process of the vehicle, the bracket can have a good supporting effect on the pipeline to protect the pipeline against contact abrasion by the ground. Potential safety hazards caused by pipeline abrasion are eliminated. The running safety of the railway vehicle is guaranteed.