The aircraft "fixed-point support" air conditioning vehicle adopting steam compression heat pump technology adopts variable frequency air supply and is suitable for the overall environmental control air conditioning of military and civil large, medium and small aircraft. Through the high-pressure blower and transmission pipeline, it is connected to the standard interface of aircraft ground air conditioning to maintain a constant temperature inside the aircraft; it can also be externally connected with an air distribution device to take into account the aircraft maintenance process guarantee at peripheral workstations. Variable frequency air supply at high and low pressures, while ensuring constant temperature inside the aircraft and support for peripheral workstations; adopting a multi-system form with small machines, combined with variable frequency control of the blower and closed-loop control of the outlet air temperature to achieve energy saving and consumption reduction effects; the unit adopts a "high temperature resistance" patent, enabling the equipment to operate stably in a hot and humid environment up to 60°C; the unit adopts a "low noise" patent, and the overall noise is ≤70dB; it adopts a stainless steel frame structure with surface spray treatment, which is beautiful and does not rust; it adopts automatic control technology for automatic operation, automatic defrosting, and automatic protection.