If elderly people often have the situation of not being able to get air, first of all, consider that it is a circulatory system disease, such as coronary heart disease, angina pectoris, chronic heart disease, chronic pulmonary heart disease, hypertensive heart disease, cardiomyopathy, once these conditions cause arrhythmia or heart failure, they will often have chest tightness, shortness of breath, palpitations, etc., usually because of the ischemia, stenosis, spasm of the coronary arteries, the blood supply to the cardiomyocytes, the This is usually caused by the ischemia, stenosis and spasm of the coronary arteries and insufficient blood and oxygen supply to the heart muscle cells. Secondly, the elderly can’t get air and respiratory system diseases, such as chronic obstructive pulmonary emphysema, chronic pulmonary heart disease, pulmonary hypertension, chronic bronchial dilatation, when there will be low partial pressure of oxygen and high partial pressure of carbon dioxide, there will also be symptoms of breathlessness. Finally, if the elderly have different degrees of endocrine metabolic diseases, hypothyroidism and hypoadrenalism will also have this clinical manifestation.