Brake cabinet and rail car

The invention provides a brake cabinet and a rail car. The brake cabinet comprises a cabinet body and also comprises a working air cylinder, a pressure reduction air cylinder, an air channel plate and a pressure gauge which are arranged in the cabinet body; the working air cylinder is located above the pressure reduction air cylinder, the two ends of the working air cylinder are flush with the two ends of the inner wall of the cabinet body in the length direction, and the top face of the working air cylinder is flush with the inner wall of the top end of the cabinet body. The pressure gauge is located below the pressure reduction air cylinder, the problem that the length of the cabinet body is large due to the fact that the pressure gauge is installed at the two ends of the pressure reduction air cylinder is solved, and the occupied length of the cabinet body is reduced; the pressure gauge is mounted on a front panel of the cabinet body; the air channel plate is located below the pressure gauge and communicat