Nasal plug for breathing machine

The utility model discloses a nasal plug for a breathing machine, which relates to the technical field of medical instruments and comprises an air storage box, an air pipe joint, an air inlet pipe and an air outlet pipe. The two nasal inlet pipes are mounted on one side of the air storage box in a communicating manner; the at least two fixed air bags are fixed on the outer walls of the two nasal inlet pipes; the inflatable air bag is mounted on the other side of the air storage box and is communicated with the fixed air bag through a pipe fitting; the extrusion block is installed on the outer side of the air storage box in a sliding mode, and when the extrusion block slides towards the inflatable air bag, the extrusion block extrudes the inflatable air bag to enable air in the inflatable air bag to enter the fixed air bag through the pipe fitting, so that the fixed air bag is expanded; the fixing air bag is adopted for expansion fixation, a traditional bandage structure is omitted, the nose plug can be fixed