The utility model discloses a quick connecting air faucet which comprises a base end and a connecting end; the base end is arranged on a face mask; the connecting end is in threaded connection with the base end in a rotating way; the connecting end comprises an outer cylinder and an inner cylinder; the inner cylinder is connected at the inner part of the outer cylinder in a clamping way; the base end, the outer cylinder and the inner cylinder are all of hollow structures; the base end is provided with screw threads; correspondingly, screw threads matched with that of the base end are arranged on the outer surface of the outer cylinder; and the inner cylinder is connected with a hose communicated with circulating oxygen. The quick connecting air faucet is convenient in both installation and dismounting and is easier to operate than the existing air faucet if any damage needs to be replaced or the quick connecting air faucet needs to be cleaned.