Gas transmission device of breathing machine

The utility model relates to the technical field of breathing instruments, and provides a breathing machine gas transmission device which comprises a breathing machine body and a humidifier body, two symmetrically-arranged gas outlet pipelines are installed in the breathing machine body, two symmetrically-arranged clamping holes are formed in the gas outlet pipelines, and the two clamping holes are communicated with the humidifier body. A sealing gasket is installed on the air outlet pipeline, two symmetrically-arranged air inlet pipelines are installed in the humidifier body, one ends of the two air inlet pipelines are fixedly connected with a connecting piece through screws, through arrangement of structures such as a clamping block and a driving shaft, winding of two pull ropes is achieved through rotation of a rotary button, and through arrangement of a clamping device, the two pull ropes can be wound through the clamping device. According to the technical scheme, sliding of the two clamping blocks is ach