The invention relates to a support apparatus for a front-mounted breathing tube, comprising a breathing tube inserted into a breathing tube positioning member, two ball-pivot portions arranged symmetrically on one side thereof, and a concave slot is formed between the two ball-pivot portions for swinging elastically two forehead positioning members are arranged symmetrically and a head-band connecting portion is at the outer side thereof the inner side includes a connecting portion having ball-socket portions for receiving the ball-pivot portions therein. With the ball-pivot portions on the breathing tube positioning member and with the ball-socket portions of the forehead positioning members, the forehead poisoning members can swing in different directions and angles. Therefore, the breathing tube is held by the user properly and the forehead positioning members is fitted automatically onto the forehead thereof with perceptions according to the forehead size, shape and curvature and with wearing comforts for the user.
