Disclosed herein is a balloon catheter for the respiratory tract, which serves to widen the lumen of the respiratory tract when stricture or stenosis of the lumen occurs and is configured to enable a patient to breathe even during catheterization. The catheter includes a tube unit having a double structure consisting of an inner tube and an outer tube spaced apart from the inner tube to surround the inner tube, and a cylindrical balloon integrally connected to facing distal ends of the inner and outer tubes. The balloon is inflated to have a hollow cylindrical shape as inflation gas is supplied into the outer tube, thereby acting to widen the stenosed or narrowed lumen of the respiratory tract, and simultaneously, oxygen is supplied into the inner tube to pass through the cylindrical balloon, thereby enabling a patient to breathe and resulting in stability in catheterization.
