When hyperventilating, it is important to adjust breathing, and under medical supervision, a paper bag or a long bag can be placed over the mouth and nose to increase the partial pressure of carbon dioxide and relieve hyperventilation. Hyperventilation refers to the phenomenon of excessive respiratory rate, which in turn leads to a decrease in the partial pressure of carbon dioxide and, in severe cases, respiratory alkalosis. It can be caused by stress, agitation, panic or anxiety. To relieve hyperventilation, you first need to fully understand the causes and symptoms of hyperventilation and eliminate the mental burden. And learn to use the correct breathing method, it is recommended that you can take a slow abdominal breathing method, slow down the breathing rate, to eliminate the tendency of hyperventilation. If necessary, medications such as ghrelin, bromides, and tranquilizers can be taken as prescribed by the doctor to relieve mental stress and reduce the respiratory rate. To increase the partial pressure of blood carbon dioxide, the mouth and nose can be covered with a paper bag or a long tube bag to increase the dead space of the respiratory tract and reduce the exhalation and loss of carbon dioxide, and to treat the symptoms. If the hyperventilation is due to a pathologic cause, active treatment of the primary disease is required. It is important to note that mild hyperventilation can resolve on its own. Severe symptoms, such as palpitations (rapid heartbeat, often accompanied by panic), chest pain, twitching of hands and feet, dizziness and even impaired consciousness, require prompt medical attention.