The Heimlich maneuver, invented by a doctor named Heimlich, is a special method for rescuing acute airway obstruction caused by foreign bodies, and is currently one of the most recognized and effective resuscitation methods in the world. The principle is to shock the patient’s upper abdomen, so that the diaphragm in the abdomen is rapidly lifted up, and the pressure in the chest cavity is suddenly increased, thus giving the airway an outward shock, which can promote the discharge of foreign bodies obstructed to the airway. If the patient is awake and can stand, the operator usually stands behind the patient, wraps his hands around the waist, makes a fist with both hands, and then gives an inward and upward impact to the patient’s upper abdomen with the large fissure, then it can be completed. However, if the patient is unconscious, the patient must be made to lie down and then give inward and upward impact to the upper abdomen. In the case of pregnant women or obese people, if the abdomen cannot be pressed, the lower part of the patient’s sternum can also be pressed, which can also cause a sudden increase in the pressure in the chest cavity to achieve the above effect.