In cases where choking requires first aid, the food usually obstructs the airway, causing breathing difficulties. In this case, the Heimlich maneuver can be chosen, which is one of the more recognized and effective methods of resuscitation for acute airway obstruction in the world. If the patient is awake and able to stand, the operator is usually behind him/her, reaching with both hands through the waist to the front of his/her abdomen, then making a fist with both hands, impacting the patient’s upper abdomen inward and upward with the large fissure of one hand, thus causing the diaphragm to lift up rapidly and the pressure in the space to increase suddenly, so that there is an impulse to the airway and outward discharge, so that the foreign body just inside the airway is discharged from the mouth, thus relieving the The obstruction is relieved. However, if a pregnant woman or a person with a full and obese abdomen, the method of pressing the chest can be used, which can also achieve the above effect. If the patient is unconscious, it is also possible to make the patient lie flat and then shock his upper abdomen.