Hyperventilation can be caused by a variety of reasons, and in the process of hyperventilation treatment, it is mainly necessary to do treatment for the cause. For example, if it is caused by infections or cirrhosis, we need to actively treat the original disease and treat the infection or cirrhosis. If it is caused by mental stress, we should actively communicate with the patient to reduce the patient’s mental burden and eliminate the fear. In addition, the patient can be instructed to do abdominal breathing and then breathe slowly to reduce or eliminate the tendency of hyperventilation by reducing the breathing rate. Patients can also be given a mask to buckle or have them blow into a sealed envelope or pocket to allow for repeated inhalation of carbon dioxide while breathing to correct hypocapnia. For a subset of those with more pronounced anxiety symptoms, sedative medications can be used as appropriate. In conclusion, hyperventilation can be caused by a variety of reasons, and treatment still needs to be done to address the cause.