Disposable oxygen inhalation bite block for diagnosis and treatment of gastroscope and bronchoscope

The utility model relates to the field of medical auxiliary devices, in particular to a disposable gastroscope and bronchoscope diagnosis and treatment oxygen inhalation bite block which comprises an arc-shaped plate a, a fixing head band, a bite block outer ring, a bite block inner ring and an oxygen supply connector tube. Two ends of the fixing head band are respectively tied on the two groups of through holes; the bite block outer ring is cylindrical and is horizontally arranged on the arc-shaped plate a; the inner wall of the bite block outer ring and the outer wall of the bite block inner ring are connected through a plurality of groups of supporting beam columns; a contact block a is arranged on the oxygen supply connector pipe, a contact block b is arranged on the contact block a, the contact block a is attached to the front side face of the arc-shaped plate a, an opening for the contact block b to penetrate through is formed in the bite block outer ring, the contact block b is attached to the peripher