The Heimlich maneuver is used for acute respiratory foreign body obstruction and is divided into child and adult maneuvers. 1. Children (not applicable to children under 1 year old): use non-dominant hand to grasp both sides of the child’s jawbone, place the child’s face on the rescuer’s palm (do not press tightly), at the same time, the child’s torso to cure the rescuer’s forearms (parallel to the forearms), use the dominant hand to beat (do not overly forceful) the child’s back (the middle part of the body) for 5 times, if it is not effective, the child will be turned over in the forearms immediately, the use of the dominant hand’s forefinger and middle finger pressure on the child’s If this is not effective, immediately turn the child over on his or her forearm and press the child’s index and middle fingers with the dominant hand 5 times at the xiphoid process. 2. Adults: a rescuer is required to stand behind the patient. It is recommended to make a fist with one hand, grasp the fist with the other hand, and press both hands above the person’s navel. Apply strong pressure with both hands above the umbilicus (at the base of the diaphragm) of the person with an airway obstruction. This maneuver compresses the lungs and exerts pressure on the object stuck in the airway, expelling it. The application of pressure is equivalent to an artificially induced cough. Larger individuals require more pressure to be applied. Pregnant/overweight individuals may raise the area of force application to the chest. It is important to note that since this first aid may cause abdominal bruising or even rib or sternum fractures, it should only be used if the person with an obstructed airway cannot be encouraged to cough and if tapping on the back is ineffective, and that all persons should be examined in a hospital after using this first aid to prevent missing injuries to organs and bones.