A trachea cannula comprises a cannula body (1) and an inflatable bag (2), the cannula body is hollow structured and comprises a front end inserted into oral cavity of human and a rear end outside the oral cavity, and the front end of the cannula body is configured with an opening (6) which is disposed at a head of the front end. The trachea cannula further comprises a visible light source (3), a switch (5) for controlling the visible light source, and a battery (6) supplying power to the visible light source, and both the inflatable bag and the visible light source are secured at the front end of the cannula body the switch, the battery and the visible light source are connected together in series via wires, forming a closed circuit the distance from the visible light source to the opening is equal to the distance from a middle point between the third tracheal ring and the fourth tracheal ring to a position 1.5 to 2 cm from tracheal bifurcation at the trachea. Such intubation for the tracheal facilitates the medical staff to determine whether the trachea cannula is located at a correct position conveniently and quickly based on whether the visible light source is placed a position between the third tracheal ring and the fourth tracheal ring, without any harm to human body.
