A turbo machine (100a, 100b, 100c) 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.