Provided is a fluid machine, wherein the weight and the size can be reduced while the manufacturing cost is reduced. A fluid machine (1) contains a drive unit (4), and a driven unit (6) to which the driving force of the drive unit (4) is transmitted, within a sealed container (2). The sealed container (2) is comprised of a first shell (78) for covering the drive unit (4), and a second shell (80) for covering the driven unit (6), which is connected to the first shell (78). The first shell (78) is molded by a processing method different from the second shell (80).