The invention relates to a refrigeration air conditioner for a helicopter, which comprises an electric control cabinet, a compressor, an air cooling condenser, a condenser fan, an evaporator and an air feeder, wherein the compressor is connected with the air cooling condenser; the compressor, the air cooling condenser and the condenser fan are not arranged in a driving cab of the helicopter; and the evaporator and the air feeder are arranged in the driving cab of the helicopter. The refrigeration air conditioner combines all parts of an air-conditioning system, the compressor and the condenser are arranged on a main reducing platform in a fairing arranged at the front part of an engine compartment, the evaporator is arranged under the floor of the driving cab, a refrigeration operating box is arranged on a control board of the driving cab, and the traditional gas-liquid separator, oil separator and electromagnetic valve are not used in a refrigerating system anymore; and the refrigeration air conditioner for the helicopter is simple in structure, is high/low-temperature resistant, rain-proof, fog-proof and dust-proof and impact resistant, and can meet the using requirements of the helicopter in the aspects of acceleration, vibration, strength, hardness, toughness and ageing performance.