Unconscious deep breathing may be due to environmental hypoxia, pulmonary insufficiency, cardiac insufficiency, acidosis and other reasons. 1. In the oxygen thin plateau area, lack of air circulation in the confined space and other environments, due to insufficient oxygen intake, the body tissue cells lack of oxygen will be unconscious deep breathing. 2. Pulmonary insufficiency: chronic obstructive pulmonary disease, bronchial asthma and other inflammatory airway lesions lead to airway narrowing or even obstruction, lung ventilation is limited, so it will be unconsciously deep breathing; idiopathic pulmonary fibrosis, pulmonary hypertension and other causes of oxygenation dysfunction of the lungs, the decline in blood oxygen concentration and unconscious deep breathing. 3. Cardiac insufficiency: heart failure, myocarditis, myocardial ischemic lesions, etc. lead to insufficient pumping of the heart, body ischemia, hypoxia, so it will be unconscious deep breathing. 4. Acidosis: diabetic ketoacidosis and other conditions, the body’s acidic substances increase, through the deep breathing of carbon dioxide out of the body, and therefore will be unconscious deep breathing. Unconscious deep breathing may be related to a variety of factors, such as mental stress can also occur, if the symptoms are serious or gradually aggravated, you need to consult a regular hospital in a timely manner, with the doctor to improve the examination, standardized treatment.