The proposed invention relates to the field of physical therapy and can be used for the treatment and prophylaxis of a number of diseases, and also for health-improving purposes, including improving the stamina, for instance, of athletes. The installation for conducting general air cryotherapy comprises a closed-type cryogenic chamber (1) with a door (2) with heat insulation (3) and a heat sensor (8), a refrigeration machine (7) with a condenser and a power and control unit (9), and a coolant supply line (6), wherein the refrigeration machine (7) has two cascades, and an evaporator (4) with a ventilator (5) is installed into the ceiling or wall of the cryogenic chamber (1) and is connected by means of the coolant supply line (6) to the double-cascade refrigeration machine (7), and wherein a heat control valve (12) is installed at the inlet to the evaporator (4), and the cryogenic chamber (1) is equipped with a valve for equalizing pressure with the outside environment (11), and wherein said valve (11) has an electric heater, the door (2) of the cryogenic chamber (1) is made entirely transparent and is equipped, as is the frame thereof, with an electric heater, and a control console with a sensor panel (13) is installed on the external surface of the cryogenic chamber (1). The proposed installation is more reliable than the prototype and the dimensions and cost of the installation are significantly decreased. The proposed installation can be used for the purposes of treatment and prophylaxis in the fields of rheumatoid arthritis, neurology, dermatology, traumatology and orthopedics, states of depression and stress, and in sports medicine.Linvention se rapporte au domaine de la physiothérapie et peut être utilisée afin de traiter et de prévenir toute une série de maladies, ainsi quà des fins de remise en forme, notamment afin daugmenter lendurance de sportifs, par exemple. Cette installation de cryothérapie générale par air comprend une chambre cryogénique (1) de type
