Trachea cannula separation structure

The utility model discloses a trachea cannula separation structure which comprises a separation plug and a separation insertion plate. The separation plug comprises an inner connector, and outer connectors are coaxially arranged on the outer side of the lower portion of the inner connector at intervals. The separation insertion plate comprises a plug separation section and an insertion tube separation section which are arranged in a segmented manner; the plug separation section is arranged in the inner joint and divides the inner part of the inner joint into an air inlet chamber and an air outlet chamber which are independent from each other; the cannula separation section is made of an elastic material, the width is equal to the inner diameter of the trachea cannula, and the length is smaller than the length of the catheter; when the cannula separation section is movably inserted into the catheter, the lower end of the cannula separation section is located on the inner side of the inner end, stretching into