Eating accidentally into the trachea if the food residue, can be discharged through voluntary coughing, if the food stuck in the main trachea, airway obstruction, you should immediately use the Heimlich maneuver for first aid, and promptly call the 120 emergency telephone. Heimlich’s first aid method. 1. The patient is conscious and able to stand, the rescuer from behind to hold its abdomen, one hand fist, the thumb side of the patient’s chest below the navel above the part of the other hand to hold the fist of the hand to the top of the rapid impact of the internal pressure on the abdomen, the patient slightly bowed his head, the mouth open in order to spit out the foreign body, pay attention to the process of rescuing should be the force of the hand to the impact, can not be used to squeeze the arms. 2. The patient is unconscious and can not stand, can be taken to the supine position, the rescuer riding on the patient’s hip area, hands stacked, the root of the palm of the top of the patient’s thorax below the navel above the part of the impact, such as foreign objects have been rushed should be quickly removed from the patient’s mouth. 3. The first aid method for young children is to put the child’s face downward, close to the rescuer’s palm, and put the whole body on the rescuer’s forearm, and the rescuer’s body keeps downward tilted state, and keep impacting the patient’s back through the root of the palm and discharging the foreign matter. 4. In emergency situations around the patient no one present, you can use the back of the chair, railing, etc., against the upper abdomen fast and furious impact, until the foreign body flushed out. Concentrate on eating, chewing and swallowing slowly. If the foreign body enters the trachea by mistake, it can be treated by the above methods, and if necessary, go to the hospital immediately.