An exhaust turbine that is driven by exhaust gas from an engine and that is provided with: a plate that runs along an introduction path that is formed around a turbine impeller; a plurality of nozzle members that include a nozzle vane that is arranged on the introduction path and include a shaft part that passes through the plate; a link mechanism that is for rotating the plurality of nozzle members around the shaft parts thereof; a housing that rotatably supports a rotating shaft to which the turbine impeller is attached and that forms, between itself and the plate, a link chamber in which the link mechanism is housed; and a pressurization path that supplies pressurized air to the inside of the link chamber.