Tracheal catheter having pressure regulating function

The utility model discloses a tracheal catheter having a pressure regulating function. The tracheal catheter comprises an air guide tube, a side air guide port arranged in a side wall of a lower tube opening of the air guide tube and air bags which the air guide tube is fixedly sleeved with. The air bags are a first air bag and a second air bag, wherein the air guide tube is fixedly sleeved with the first air bag and the second air bag in the axial direction at intervals from top to bottom. The two air bags are respectively communicated with lower ports of two inflation tubes arranged in an air guide tube interlayer, upper ports of the two inflation tubes extend out of the air guide tube in a sealed mode through the position of a tube wall of the upper portion of the air guide tube, and tube walls of the two inflation tubes extending out of the air guide tube are respectively provided with a branch tube with a pressure regulating air escape valve. The tracheal catheter has the advantages of being simple in st