Trachea cannula block up cap

The utility model relates to a pipe blocking cap for the casing pipe of a windpipe, and belongs to the field of the medical appliance. The utility model comprises a casing cylinder which is sleeved on the nozzle of the casing pipe of the windpipe. One end of the casing cylinder is provided with an opening, and the other end is fixed with a lower cover plate with a hemi-circular shape. The middle part of the straight edge of the lower cover plate is provided with a rotating shaft. An upper cover plate with a hemi-circular shape is sleeved on the rotating shaft. The utility model has the advantages that the sealing performance is good, and the plugging of the pipe is easy to be successful.