Almost all of the air circulating in the aircraft comes from the aircraft air conditioning system, which is a major part of the aircraft cabin environmental control system. The cabin environmental control system provides the following three functions: cabin pressurization, temperature regulation, and equipment cooling.

At present, there are general aircraft ground air conditioning air supply hoses​, which are used to deliver fresh air with a certain flow, temperature and pressure from the aircraft ground air conditioning to the air conditioning interface of the aircraft fuselage from the air outlet of the air conditioner. However, this type of general aircraft ground air-conditioning air supply hose generally has a length ranging from 10 to 40 meters, and the length is longer.