A refrigeration device for performing a multi-stage compression refrigeration cycle, in which, even if the refrigeration device becomes under operating conditions in which the temperature of a heat source for an intermediate cooler is low, a refrigerant sucked into a rear stage-side compression element does not become wet. An air conditioner (1) has a two-stage compression type compression mechanism (2), a heat source-side heat exchanger (4), a utilization-side heat exchanger (6), an intermediate cooler (7) provided in an intermediate refrigerant pipe (8) for causing a rear stage-side compression element (2d) to suck the refrigerant discharged from a front stage-side compression element (2c), and an intermediate cooler bypassing pipe (9) connected to the intermediate refrigerant pipe (8) so as to bypass the intermediate cooler (7). When the temperature of the heat source for the intermediate cooler (7) or the temperature of the refrigerant at the exit of the intermediate cooler (7) is lower than or equal to the saturation temperature of the refrigerant sent from the front stage-side compression element (2c) to the rear stage-side compression element (2d), the air conditioner (1) uses the intermediate cooler bypassing pipe (9) to perform wetting prevention control for preventing the refrigerant from flowing to the intermediate cooler (7).