A turbo machine comprising: a rotating shaft that includes a first taper portion and a first cylindrical portion , the first taper portion decreasing in diameter toward a first end of the rotating shaft in an axial direction of the rotating shaft , the first cylindrical portion being located on a side of the first taper portion opposite from the first end, the first cylindrical portion being constant in diameter; a first impeller that is located on the side of the first taper portion opposite from the first end in the axial direction of the rotating shaft , that is fixed to the rotating shaft , and that compresses or expands a working fluid; a first fluid bearing that rotatably supports the first taper portion both in a radial direction and the axial direction of the rotating shaft via a lubricating liquid and that rotatably supports the first cylindrical portion in the radial direction of the rotating shaft via the lubricating liquid; a first holding member that is disposed outside the first fluid bearing in a radial direction of the first fluid bearing , the first fluid bearing being attached to the first holding member ; a first lubricating liquid casing that is disposed adjacent to the first holding member and that forms a first storing space , the first storing space being capable of storing the lubricating liquid, which is to be supplied to the first fluid bearing ; and a first supplying passage through which the lubricating liquid is supplied to the first storing space ; characterized by a first squeeze film damper that is a space located between the first fluid bearing and the first holding member in the radial direction of the first fluid bearing , the first squeeze film damper communicating with the first supplying passage . a rotating shaft that includes a first taper portion and a first cylindrical portion , the first taper portion decreasing in diameter toward a first end of the rotating shaft in an axial direction of the rotating shaft , the first cylindrical portion being located on a side of the first taper portion opposite from the first end, the first cylindrical portion being constant in diameter; a first impeller that is located on the side of the first taper portion opposite from the first end in the axial direction of the rotating shaft , that is fixed to the rotating shaft , and that compresses or expands a working fluid; a first fluid bearing that rotatably supports the first taper portion both in a radial direction and the axial direction of the rotating shaft via a lubricating liquid and that rotatably supports the first cylindrical portion in the radial direction of the rotating shaft via the lubricating liquid; a first holding member that is disposed outside the first fluid bearing in a radial direction of the first fluid bearing , the first fluid bearing being attached to the first holding member ; a first lubricating liquid casing that is disposed adjacent to the first holding member and that forms a first storing space , the first storing space being capable of storing the lubricating liquid, which is to be supplied to the first fluid bearing ; and a first supplying passage through which the lubricating liquid is supplied to the first storing space ; characterized by a first squeeze film damper that is a space located between the first fluid bearing and the first holding member in the radial direction of the first fluid bearing , the first squeeze film damper communicating with the first supplying passage . <EOS>