To make an oxygen inhaling tube hard to remove at the time of an oxygen inhaling from nose by providing an auxiliary belt to the oxygen inhaling tube from nose in a manner to span the rear part of head.

An auxiliary belt 2 is attached to an oxygen inhaling tube 1 from nose, in a manner to span the rear part of head. By this method, the oxygen inhaling tube 1 from nose is fixed by the auxiliary belt 2, and the tube is made hard to remove from ears, and the stability of the tube is improved even under an unconscious state including a sleeping or the like. Also, problems such as an irritation of the skin of ears where the tube is engaged during a long usage, and a burden to the skin due to the fixation with a tape of the tube to a cheek area can be reduced as well.