The utility model discloses an adjustable oxygen tube, including pipe, the fixed cover of nasal obstruction, nasal obstruction, attach fitting, still include the flexible fixed cover of pipe, ear -hang, head, the flexible fixed cover of pipe has two, and the cover is located the fixed cover both sides of nasal obstruction respectively on the pipe, and the ear -hang has two, is connected with the flexible fixed cover of two pipes respectively, and pipe one end is connected with the attach fitting by head end -blocking, the other end. The utility model discloses wearing conveniently, can adjusting length, be applicable to different shape of face patients, the oxygen hose through lower jaw or pillow back, has not avoided this position to press the emergence of sore, and the ear -hang can be pasted, can directly hang yet and fix in the auricle, and two kinds of forms avoid the auricle to last the pressurized, reduce the emergence probability that the sore was pressed to the pipe, guarantee that the patient is comfortable.