The main purpose of blowing gas during artificial respiration is to carry out timely resuscitation to promote the recovery of the heart, respiration and other functions. The rescued person is mostly caused by major trauma, acute poisoning, drowning, electric shock and other sudden causes of respiratory arrest, cardiac arrest, blowing through the mouth can be blown out of the gas in the oxygen into the lungs, make the lungs expand, to avoid patients due to a lack of oxygen leading to organ damage, asphyxiation, and other circumstances occur. Artificial respiration is one of the steps of cardiopulmonary resuscitation (CPR), which is commonly used in mouth-to-mouth artificial respiration, mouth-to-nose artificial respiration is often used for patients with severe oral injuries, or patients with closed teeth, and mouth-to-mouth artificial respiration is often used for infants and young children. Before artificial respiration, the patient’s mouth and nose need to be removed first, and then open the airway. Different methods of opening the airway can be adopted for different patients, such as tilting the head and lifting the chin, tilting the head and lifting the neck, and lifting both lower jaws. The patient’s chest needs to be observed for elevation during blowing to ensure that the gas is blown into the lungs, that the patient has a chest rise and fall, and that gas can be heard or felt escaping during blowing. Artificial respiration needs to be accompanied by chest compressions to promote the recovery of cardiopulmonary activity and reduce organic damage.