Choking on the trachea is a common accidental situation in daily life. In most cases, food residues or foreign bodies that choke into the trachea can be expelled on their own by vigorous coughing without serious consequences. However, if food or a foreign body becomes stuck in the larynx and an airway obstruction occurs, choking may occur and become life-threatening. The patient will usually put one hand to the throat with a painful expression, which is the Heimlich sign. In this case, the Heimlich method can usually be used for first aid. The Heimlich method can be roughly divided into the Heimlich method for children, the Heimlich method for adults, and the Heimlich self-help method. Specific operations are as follows: 1. Child Heimlich: The rescuer sits on his knees, picks up the baby, turns the baby face down, and lets the baby’s body lean on the rescuer’s knees. At this time the rescuer’s arm against the baby’s forehead, thumb and index finger pinch the baby’s cheek, the other hand on the baby’s shoulder blade beat 5 times. If the baby has not spit out the foreign body, you can turn the baby right side up, in the lower part of the baby’s sternum, with the index finger and middle finger pressure 5 times. Repeat the above actions to help the baby cough up the foreign body blocking the trachea until it is spit out; 2. Adult Heimlich method: First, the rescuer stands behind the patient and wraps his arms around the waist. The rescuer makes a fist with one hand, thumb under the patient’s chest, belly button on the abdomen, the other hand to grab the fist, rapid upward impact compression of the abdomen. Be careful not to use boxing, do not squeeze the thorax, and squeeze with the force of the hand, not with the force of the arms. Repeat the operation until the foreign body is discharged; 3. Self-help Heimlich method: The patient puts the thumb side of his fist below the thorax and above the belly button on the abdomen, bending slightly. Lean on a fixed horizontal object, such as the edge of a table, handrail railing, etc., and press your upper abdomen against the object for rapid upward impact, and repeat the operation until the foreign body is discharged. The Heimlich maneuver is not a substitute for formal hospital treatment, and you should go to the hospital emergency room for examination and treatment regardless of whether the rescue is successful. If the Heimlich method is not effective, the foreign body is large and the patient has severe respiratory distress, it is recommended that the patient undergo bronchoscopic surgery to remove the foreign body. Prevent adhesions with the surrounding bronchial tissues due to the deep location of the foreign body and its prolonged jamming.